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  • Accretionary Lapilli Tuff £2.25£6.00 ex VAT

    Accretionary lapilli tuff is an igneous pyroclastic rock, these samples come from Longsleddle, Cumbria in the UK and forms when hot ash and debris is ejected from as volcano. Some of this material is held together by moisture and once heavy enough, falls into the ash below forming small ‘spots’ within the material, creating a speckled rock. The samples are suitable both for young and serious collectors as well as educational use and are supplied in various sizes with a card tray and label.

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    65 in stock

  • Aeolian Sandstone £2.25£6.00 ex VAT

    Specimens of Aeolian Sandstone collected from Lazonby, near Penrith, Cumbria in the UK. This aeolian sandstone is Triassic in age – approximately 200 Ma. It belongs to the group of rocks known as the New Red Sandstone which date from the Permian (280 Ma) into the Triassic. The composition of this sandstone consists solely of spheroidal (millet seed) quartz grains with an iron oxide cement called haematite. It is the presence of this haematite that contributes to the distinct red – orange colouration of these samples. This lithology is typical of an aeolian (wind blown) hot desert environment. Available in multiple sizes, these specimens come supplied in a white card tray with information label.

    We also supply Aeolian Sandstone thin sections for microscope study which are available to buy HERE.

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  • Agglomerate £2.25£6.00 ex VAT

    Agglomerate igneous rock specimens from Scotland, UK. A coarse grained, hard blocky rock exhibiting a conglomeration of various minerals and igneous material of volcanic origin. These samples formed part of the Glen Coe caldera and are apart of the upper streaky andesite unit, the exhibit poor sorting and orientation of material which indicates a somewhat violent origin but this can vary from agglomerates by location and is mainly down to the chemistry of the igneous material. The samples are available in 3 sizes and come supplied in a card tray with a label, they are suitable for educational use to show the different types of volcanic rocks produced as well as those interested in collecting rock samples.

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  • Amygdaloidal Basalt £2.25£6.00 ex VAT

    Amygdaloidal basalt is an igneous rock which is extrusive in nature, these specimens formed over 60 million years ago during the Tertiary period and come from Ireland. They are part of the Antrim lava group and exhibit a dark colouration with occurrences of amygdales containing quartz and calcite crystals. As a basalt they are somewhat dense, but lighter than pure samples due to the cavities within them which formed as a result of gaseous activity during their ejection. Over time, hydrothermal fluids pass through the rock and minerals form within the cavities, which gives the usually dark coloured rock a speckled appearance. These samples are available in various sizes and are suitable for higher educational use to detail the subtle differences between similar igneous rocks, they come supplied in a card tray with an information label.

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    60 in stock

  • Andesite £2.25£3.50 ex VAT

    Andesite igneous rock specimens of late Ordovician age which form part of the Barrowdale volcanic group. The rocks come from Cumbria, UK and have a dark colouration with a blue tint and may contain augite crystals. The rocks are intermediate in chemistry and suitable for higher level education to explain the difference in various igneous groups. Samples are available in 3 sizes and will come supplied in a card tray with an information label.

    We also supply Andesite thin sections for microscope study which are available to buy HERE.

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  • Anorthosite £2.25£6.00 ex VAT

    Anorthosite phaneratic igneous rock specimens of Protozoic age from the Rogaland province in Norway. The samples have an almost pure white colouration due to an abundance of plagioclase feldspar which comprises of most of the rock and exhibit a coarse grain size with visible with the naked eye and exhibiting a low density. The samples are suitable for the more serious or professional collector as well as higher level educational use and are available in three sizes and supplied in a card tray with a label.

    We also supply Anorthosite thin sections for microscope study which are available to buy HERE.

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  • Ashford Black Marble – Derbyshire £2.25£6.00 ex VAT

    Ashford Black Marble samples originate from Ashford-in-the-Water, Derbyshire, UK. Despite its name, this rock surprises many by being classified as a fine-grained Sedimentary Rock instead of a Metamorphic one. This classification is due to its true nature as a dark limestone rather than a genuine marble. Ashford Black Marble earns its reputation for ornamental purposes, showcasing a stunningly shiny black surface when cutting and polishing it. The rock’s origin dates back to the Carboniferous period, and it boasts a generous amount of bitumen, giving rise to its dark grey hue that transforms into a mesmerising glossy black appearance upon polishing. Supplied in various sizes, each specimen comes presented in a white card tray with an accompanying informative label.

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  • Augen Gneiss £2.25£6.00 ex VAT

    Augen Gneiss is a foliated metamorphic rock with large crystals of lenticular or eliptical shear bound microcline.

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    13 in stock

  • Augite Andesite £2.25£6.00 ex VAT

    Augite andesite igneous rock specimens from Thirlmere, Cumbria, UK which are of late Ordovician age which form part of the Barrowdale volcanic group. The samples are of intermediate composition and contain phenocrysts of the pyroxene mineral, augite, giving the normally dark blue rock a black speckled appearance. The samples are available in 3 sizes and come supplied in a card tray with a label.

    We also supply Augite Andesite thin sections for microscope study which are available to buy HERE.

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    84 in stock

  • Augite Granophyre £2.25£6.00 ex VAT

    Augite granophyre igneous rock specimens from Carrockfell, Keswick in Cumbria, UK. Excellent pieces exhibiting a medium grain size of crystals which constitute this rock including, augite, quartz and feldspars and shows a granophyric texture. Suitable for avid collectors and higher educational use, the samples come supplied in a sized card tray with an information label.

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    84 in stock

  • Banded Tuff £1.50£3.50 ex VAT

    Specimens of Banded Tuff, collected from Cumbria in the UK. Tuff is an igenous rock, formed when volcanic ash that is ejected from a vent during an eruption, is deposited and lithified into a solid rock. Tuff is often banded, as larger particles of fall first, with finer particles deposited on top as they fall later. These pieces are in limited stock and pink-brown in colour. Varying levels of banding shown in each piece. Available in three different sizes and come in a white card tray with an information label.

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  • Basalt £2.25£6.00 ex VAT

    Specimens of Basalt, collected from Northern Ireland. Basalt is a common, extrusive igneous rock, that forms when magma erupts and cools quickly on the Earth’s surface. These specimens are part of the Antrim lava group and date to the Tertiary period, around 60 million years ago. This is the same as the Basalt that makes up the famous Giant’s Causeway. The chemistry of these specimens suggests that the rock is olivine basalt, and comprises plagioclase feldspar, olivine and augite. These specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Basalt thin sections for microscope study which are available to buy HERE.

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    12 in stock

  • Bauxite £2.25£6.00 ex VAT

    Bauxite is a brown or red earthy sedimentary rock and primary ore for aluminium, these mineral specimens come from Antrim, Northern Ireland and are of textbook quality, they are available in various sizes to choose from and will come supplied in a card tray with a data label.

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    276 in stock

  • Biotite Gneiss – Norway £2.25£6.00 ex VAT

    Biotite gneiss is a metamorphic rock found in Evje, Norway. These specimens exhibit alternating bands of black and white minerals, derived from quartz, plagioclase feldspar and biotite mica. Giving a surreal appearance, similar to the stripes of a zebra. The samples are available in various sizes and comes supplied in a card tray with a label.

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    73 in stock

  • Biotite Gneiss – Scotland £2.25£6.00 ex VAT

    Biotite gneiss is a metamorphic rock found in Blairgowrie, Perthshire in Scotland. These specimens exhibit faint alternating bands of black and white minerals, derived from quartz, plagioclase feldspar and biotite mica. Giving a surreal appearance, similar to the stripes of a zebra. The samples are available in various sizes and comes supplied in a card tray with a label.

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  • Biotite Granite £2.25£6.00 ex VAT

    Biotite granite igneous rock specimens from Ballachulish, Scotland, UK. Composed of the felsic minerals quartz and feldspar, with occurrences of biotite crystals. The rock has an overall white appearance due to its felsic chemistry but the black biotite mica offers a striking contrast in colours. The samples are ideal for both collectors due to the attractive nature and for college to university level education to describe the variations in granite which one may find. The samples are available in three sizes and supplied in a card tray with an information label.

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    65 in stock

  • Biotite Granite (polished) £1.50£6.00 ex VAT

    Biotite granite from Spain exhibiting plagioclase feldspar, quartz and biotite mica, specimens have been cut and polished on one surface allowing easy viewing of the crystals without the aid of magnification.

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    2 in stock

  • Biotite Muscovite Granite £2.25£6.00 ex VAT

    Biotite muscovite granite specimens from St. Austell in Cornwall, UK of Permian age is a coarse grained igneous rock composed of quartz, plagioclase feldspar, biotite and muscovite. The rock is part of the St. Austell pluton which formed 280 million years ago. An off white colour with gold and black flecks of micas, the rock has a unique chemistry and resulted in the rich mineralisation of ores in the area. The samples are suitable for collectors and educational use to show granite variants, available in three sizes. Each piece will come supplied in a card tray with an information label.

    We also supply Biotite Muscovite Granite thin sections for microscope study which are available to buy HERE.

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    75 in stock

  • Boulder Clay £2.25£6.00 ex VAT

    Boulder clay from Yorkshire, UK from the Pleistocene period, shows random sized various clasts within a glacial clay matrix. Formed through various glacial or ice sheet processes, these sedimentary rocks are available in various sizes.

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  • Breccia (Calcrete) £2.25£6.00 ex VAT

    Specimens of Breccia, collected from the Manifold Valley in Staffordshire. Breccia is a term that describes coarse grained sedimentary rocks, with large angular clasts, surrounded by a finer grained matrix. Calcrete binds the clasts in these specimens, forming on calcareous materials in response to climatic fluctuations in arid and semi-arid regions. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

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    40 in stock

  • Breccia (Recent) £2.25£6.00 ex VAT

    Specimens of Breccia, collected from Yorkshire. Breccia is a term that describes coarse grained sedimentary rocks, with large angular clasts, surrounded by a finer grained matrix. These specimens date to the Holocene period, approximately within the last 11ooo years. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

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    40 in stock

  • Brockram Breccia – Cumbria £2.25£6.00 ex VAT

    Brockram Breccia specimens sourced from Hoff, Cumbria, UK. Breccia, a type of clastic sedimentary rock, is characterized by its coarse-grained and poorly sorted nature, containing large angular fragments embedded in a finer-grained matrix.

    Brockram is a basal breccia, composed of cemented limestone and sandstone fragments originating from the Permian period. The Permian was the last period of the Paleozoic era and occurred approximately 299 – 251 million years ago.

    These samples are available in various sizes and are presented in a white card tray along with accompanying information label.

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  • Bunter Sandstone (Sherwood Sandstone) £2.25£6.00 ex VAT

    Specimens of bunter sandstone from Knutsford, Cheshire, UK. This bunter sandstone is a desert sandstone from the Buntsandstein (bunter sandstone) strata. Samples are supplied in a white card tray with an information label and are ideal for collectors of British rocks.

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  • Bytownite Basalt £2.25£6.00 ex VAT

    Bytownite basalt ( Bytownite feldspar) is another variation of the common Basalt rock. Basalt tends to to be a dark, fine, crystalline igneous rock and has a number of different variations. Bytownite feldspar is a calcium rich member of the Plagioclase family. The mineral was first described in 1835 & named for Bytown (now Ottowa) where it was found in Canada. High quality transparent examples are used to make faceted stone in the jewelllery trade. In these examples the phenocrysts are green & opaque & set in a basalt matrix. The specimens come from Cumbria, UK and are supplied in a white card tray with a label.

    We also supply Bytownite Basalt thin sections for microscope study which are available to buy HERE.

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    190 in stock

  • Cannel Coal £2.25£6.00 ex VAT

    Cannel coal by it’s physical morphology and low mineral content is considered to be coal but by its texture & organic matter content it is considered to be oil shale. Although historically the term cannel coal has been used interchangeably.

    We also supply Cannel Coal thin sections for microscope study which are available to buy HERE.

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    200 in stock

  • Cannonball Limestone £2.50 ex VAT

    Specimens of Cannonball Limestone, collected from around the Hartlepool area, in the UK. This is a very distinctive and rare form of limestone known as Cannonball rock. It is part of the Rocker formation; a basin slope deposit which comprises part of the Zechstein Group. This is a highly studied sedimentary formation which dates to the Mid to Late Permian Period. These specimens are small, and come supplied in a 1.5″ x 1.5″ plastic magnifier box with an information label.

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    8 in stock

  • Carstone (Ironstone) £2.25£6.00 ex VAT

    Carstone (sometimes spelt carrstone) is a sedimentary rock which has a distinct, rusty red colour. These particular specimens found in Wesctott, Surrey formed during the Cretaceous period, a friable rock, it is iron rich, obtaining its colour from leaching. Used commonly as a building stone, the samples we have available have various size options and come supplied in a card tray with a label.

    We also supply Ironstone thin sections for microscope study which are available to buy HERE.

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    50 in stock

  • Chalk £2.25£6.00 ex VAT

    Specimens of Chalk, collected from Yorkshire, in the UK. Chalk is a soft, white, porous sedimentary carbonate rock and form of limestone. It forms in reasonably deep marine conditions, by the gradual accumulation of minute calcite plates, known as coccoliths, which shed from micro-organisms called coccolithophores. Additionally, it is not uncommon to find flint or chert nodules embedded in chalk. These specimens are Cretaceous in age, available in multiple sizes, and supplied in a white card tray with information label.

    We also supply Chalk thin sections for microscope study which are available to buy HERE.

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    267 in stock

  • Chalk (Red) £2.25£6.00 ex VAT

    Red chalk is early Cretaceous in age. It is chemically very similar to the later & better known white chalk.

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    70 in stock

  • Chert – Foss Mine £2.25£6.00 ex VAT

    Specimens of chert found in Foss mine, Scotland, UK. Specimens are supplied in a white card tray with an information label.

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    15 in stock

  • Chiastolite Slate £2.25£6.00 ex VAT

    Chistolite slate is a variation of slate which also contains chiastolite crystals within it,the slate its self is either a brick red or plum colour with the chiastolite crystals appearing as white lines and randomly orientated within the rock matrix. rock specimens are available in various sizes and will be supplied in a labelled card tray.

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  • Coal – Anthracite £2.25£6.00 ex VAT

    Anthracite coal specimens, a vitreous, high grade coal with a hard and compact nature, these samples are from the Carboniferous coalfields of South Wales, UK and are one of the coals which have fewer impurities and a high carbon contents. Available in optional sizes, each sample will come supplied in a card tray with a label.

    We also supply Anthracite Coal thin sections for microscope study which are available to buy HERE.

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    193 in stock

  • Coal (Bituminous) £2.25£3.50 ex VAT

    Specimens of Bituminous Coal, collected from the Carboniferous deposits in Yorkshire. Bituminous Coal is an organic sedimentary rock, that forms by diagenetic and sub metamorphic compression of peat bog & swamp material. Its primary constituents are macerals: vitrinite, and liptinite. The carbon content of bituminous coal is around 60-80%. The rest consists of residual water, air, hydrogen, and sulphur. These specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Bituminous Coal thin sections for microscope study which are available to buy HERE.

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  • Conglomerate – Farringdon £2.25£6.00 ex VAT

    Specimens of Conglomerate, collected from Farringdon, Berkshire in the UK. Conglomerate is a term used to describe a group of coarse grained sedimentary rocks, featuring large well rounded clasts in a finer grained matrix. They were laid down in a high energy environment, either fluvial, alluvial or shallow marine. The roundness of the clasts can be an indicator of the transport distance or the action of sustained erosion. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

    We also supply Conglomerate thin sections for microscope study which are available to buy HERE.

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    200 in stock

  • Conglomerate (Fossiliferous) – Farringdon £2.25£6.00 ex VAT

    Specimens of fossiliferous conglomerate, collected from Farringdon, Berkshire. The term conglomerate describes a coarse grained, clastic sedimentary rock composed of a substantial proportion of rounded grains. These conglomerate specimens, despite also being from Farringdon, differ from our other clonglomerate (which you can find HERE) due to the prescence of various fossiliferous remains. These different fossil fragments include bryozoa, brachiopods and bivalves. These specimens are cretaceous in age, available in three sizes, and supplied in a white card tray with information label.

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  • Connemara Marble £1.50 ex VAT

    A rare, green marble dating back some 700 million years to the end of the Pre-Cambrian. This marble comes from the Streamstown quarry in Clifden, Co. Galway. Specimens ( max size 3″ x 2″) are supplied in a labelled card tray.

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  • Coral Limestone – Anglesey £2.25£6.00 ex VAT

    Specimens of Coral Limestone, collected from Anglesey. Limestone is a common, well known sedimentary rock. It consists of the calcium-rich shells, bones, and skeletons of the fauna that dominated during that period. These specimens date to the Palaeozoic era around 300 million years ago. They were laid down in shallow tropical seas around 300 million years ago, in the Carboniferous. The composition of these specimens is primarily Lithostrotion corals. They are available in multiple sizes and come supplied in a white card tray with an information label.

    We also supply Coral Limestone thin sections for microscope study which are available to buy HERE.

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    50 in stock

  • Cordierite Hornfels £2.25£6.00 ex VAT

    This variation of Hornfels exhibits strong banding with small crystals of Cordierite.The samples were collected from near Carrock Fell. Cumbria, UK.

    We also supply Cordierite Hornfels thin sections for microscope study which are available to buy HERE.

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    33 in stock

  • Cretaceous Sandstone £2.25£6.00 ex VAT

    Specimens of Sandstone, collected from Philpots Quarry, West Sussex, in the UK. This sandstone is from the Wealden Group (Hastings sub-group), which dates it to the Lower Cretaceous. This makes these rocks approximately 110 million years old. This Cretaceous sandstone is yellow to buff in coloured, and particularly fine grained. It exhibits large scale cross bedding, which is indicative of fast flowing tidal currents. It is quite soft , friable and flaggy in places and so is extracted mainly for concreting and building sand. These specimens are available in multiple sizes and come supplied in a white card tray with information label.

    We also supply Cretaceous Sandstone thin sections for microscope study which are available to buy HERE.

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    44 in stock

  • Crinoidal Limestone – Derbyshire £2.25£6.00 ex VAT

    Specimens of Crinoidal Limestone, collected from Derbyshire in the UK. Limestone is a common, well known sedimentary rock. It consists of the calcium-rich shells, bones, and skeletons of the fauna that dominated during that period. It was laid down approximately 350 million years ago in semi tropical seas and comes from the Dinantian epoch of the Lower Carboniferous. This limestone in particular contains crinoids which are a group of ancient marine invertebrates, and part of the sea lily family. Specimens are available in various sizes and come supplied in a white card tray with information label.

    We also supply Crinoidal Limestone thin sections for microscope study which are available to buy HERE.

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    289 in stock

  • Crinoidal Limestone – Morocco £2.25£6.00 ex VAT

    A small hand sample of fossil limestone containing numerous small Scyphocrinites crinoid stem fragments. Crinoids are fossilised sea lilies, these particular sample come from South Morocco. Often the stems are only preserved in fragments as can be seen. Samples measure approx in 3″ size and come in a small card tray with a label.

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    300 in stock

  • Deltaic Sandstone £2.25£6.00 ex VAT

    Specimens of Estuarine Sandstone, collected from Lancashire. Sandstone is a common, well known sedimentary rock, primarily composed of quartz grains. Estuarine sandstone as the name implies was laid down as fine cross bedded deposits at the mouths of rivers. Occasional marine incursions are evident from fossils & ripple bedding. Some of the fine beds are peppered with mica flakes. Specimens are supplied in a white card tray with information label.

    We also supply Deltaic Sandstone thin sections for microscope study which are available to buy HERE.

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  • Diorite £2.25£6.00 ex VAT

    Diorite rock specimens from Cockermouth, Cumbria, is an intrusive igneous rock from the Ordovician period with a coarse, phaneratic texture composed of plagioclase feldspar, biotite mica as well as hornblende with intermediate chemistry. Found with the Skiddaw group, the rock samples are more suited for serious collectors and higher level education to describe the chemistry and mineralogy of various igneous groups. Available in 3 sizes and supplied in a card tray with an information label.

    We also supply Diorite thin sections for microscope study which are available to buy HERE.

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    80 in stock

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    Dolomite £2.25£3.50 ex VAT

    Dolostone or dolomite rock is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO3)2. Most dolostones formed as a magnesium replacement of limestone or lime mud prior to lithification. It is resistant to erosion & less soluble than limestone in weakly acidic groundwater. Technically, dolostone has a stoichiometric ratio (reaction & product ratio) of nearly equal amounts of magnesium and calcium. This particular example comes from the Clitheroe area of Lancashire. Specimens are supplied in labelled card trays.

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    Out of stock

  • Dunite £2.25£6.00 ex VAT

    Dunite igneous rock specimens from the Gusdal olivine pit in Åheim, southern Norway. Composed of green olivine minerals with chromite and pyroxene crystals, the rock forms as intrusive igneous plutons in the earth mantle down to 400 km deep and displays a coarse texture and green colouration. Overall, the samples are fairly granular and weak due to their chemistry and form part of the basal gneiss complex of southern Norway. Ideal for various levels of collectors and for higher level education and research use, the samples are available in three sizes and come supplied in a card tray with an information label.

    We also supply Dunite thin sections for microscope study which are available to buy  HERE.

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  • Eclogite – Germany £2.00£25.00 ex VAT

    German Eclogite specimens from Weissenstein, Bavaria. Eclogite is a metamorphic rock, featuring red garnets within a matrix of sodium rich plagioclase called omphacite. These samples are perfect for both collectors and for educational use. They come supplied in a white card tray with an information label. Limited stock available.

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  • Eclogite – Norway £4.00£16.10 ex VAT

    Eclogite is an uncommon metamorphic rock, composed of mainly two minerals, reddish-brown garnets and omphacite, a green pyroxene. Other minerals, such as blue kyanite  and white quartz may also be present. Over all, it is an attractive looking yet rare rock, with a vibrant green colouration with red garnets to break it up. These rocks come from Almenning, Norway. Specimens are supplied in card trays with labels and come available in 4 sizes.

    We also supply Eclogite thin sections for microscope study which are available to buy HERE.

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  • Essexite (olivine monzogabbro) £2.25£6.00 ex VAT

    Essexite igneous rock specimens from Lanarkshire, Scotland, UK, also known as olivine or nepheline monzogabbro is an intrusive rock with mafic chemistry, composed of nepheline and plagioclase feldspar along with olivine, magnetite minerals as well as augite phenocrysts which exhibit euhedral crystal forms. The rock has a dense weight and overall dark colouration but attractive appearance. It is locally known as Crawfordjohns and was highly sought after as a high quality material to produce curling stones. These samples are excellent for young and older collectors as well as higher educational use, the pieces are available in three sizes and come supplied in a card tray with an information label.

    We also supply Essexite thin sections for microscope study which are available to buy HERE.

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    54 in stock

  • Fault Breccia £2.25£6.00 ex VAT

    Specimens of Fault Breccia, collected from Great Langdale, Cumbria in the UK. Breccia is a term used to describe a coarse grained sedimentary rock, with large angular clasts, surrounded by a finer grained matrix. The clasts in these specimens are cemented with calcrete which is formed on calcareous materials as a result of climatic fluctuations in arid and semi arid regions. These specimens are fault breccia meaning that unlike other breccia they were formed by tectonic forces making it a tectonite. Available in multiple sizes, each specimen is supplied in a white card tray with information label.

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  • Flint – Devon £2.25£3.50 ex VAT

    Specimens of Flint, collected from South Devon in the UK. Flint, a variety of Chert, is a micro crystalline, sedimentary rock. It is part of the silicate family and has a conchoidal fracture. These specimens display a monochromatic black interior, offset by a distinct white exterior. These specimens are available in various sizes and come in a white card tray with an information label.

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  • Flint – Norfolk £2.25£6.00 ex VAT

    Chert is classified as a sedimentary rock and is a hard cryptocrystalline form of silica. It is found as nodules and bands within the Cretaceous Chalk, with these samples coming from Norfolk in the UK. It is well known for its glassy crystalline texture which allows pieces to be knapped and for this, the rock was used by stone age humans to make various cutting tools and weapons as it often break, leaving sharp edges. The specimens exhibit an earthy brown colour with a waxy lustre and are available in various sizes, which will come supplied in a card tray with an information label.

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    30 in stock

  • Fluorescent Lapis Lazuli £3.00 ex VAT

    Specimens of Fluorescent Lapis Lazuli, collected from Afghanistan. Lapis lazuli is a metamorphic rock which contains high amounts of the mineral lazurite, which gives the rock a rich blue colour. These specimens display excellent fluoresence, turning a bright yellow orange colour when exposed to shortwave UV light. These specimens are small, approximately 1 – 1.5″ in size. They come in a white card tray with an information label.

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  • Fluorescent Travertine £4.00 ex VAT

    Specimens of Fluorescent Travertine, collected from Yorkshire, UK. Travertine is a sedimentary rock and type of limestone which forms by the rapid precipitation of calcium carbonate, often at the margins of a hot spring or in limestone caves. When presented with shortwave UV light, these specimens fluoresce a pale yellow to bright white in colour. These specimens measure approximately 2 inches in size and come in a white card tray with an information label.

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  • Fossiliferous Mudstone £2.25£6.00 ex VAT

    Fine grained, fissile sedimentary rock containing fossils such as bivalves, ammonites & belemnites from the Jurassic of Yorkshire, U.K.

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  • Fossiliferous Sandstone – Gloucestershire £2.25£6.00 ex VAT

    Rare fossiliferous sandstone from the Llandovery group of the May Hill sandstone, Gloucestershire, UK. HIstorically used as an indicative marker of the upper Llandovery group (upper Silurian), this specimen is of great geological importance, which exhibits fossils of corals and brachiapods. Each specimen comes supplied with a card tray and information label.

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  • Frosterley Marble £2.25£6.00 ex VAT

    Specimens of Frosterley Marble, collected from Harewood Quarry, Co. Durham in the UK. Frosterley Marble is not actually a marble, but rather a black limestone consisting of Carboniferous age fossil corals. This makes it a sedimentary rock. The most famous use of Frosterley Marble is in Durham Cathedral where the ceiling of the Ceiling of the Chapel of Nine Altars has slender column supports composed from this stone. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

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    60 in stock

  • Gabbro £2.25£6.00 ex VAT

    Gabbro igneous rock specimens from Balmedie quarry, Aberdeen, Scotland which exhibit a coars grained texture from the crystals. Formed as a mafic pluton intrusion, the samples contain pyroxenes such as augite along side plagioclase feldspar, amphibole and olivine crystals. They are derived from a body known as the Belhelvie basic intrusion which the parent unit being the Caledonian Supersuite. Samples exhibit a grey colouration and density and are suitable for the more serious or professional collector or higher educational use to differentiate similar looking igneous rocks with different compositions and origins. Available in three sizes, the specimens come supplied in a card tray with an information label.

    We also supply Gabbro thin sections for microscope study which are available to buy  HERE.

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    31 in stock

  • Gabbro Big Feldspar £2.25£6.00 ex VAT

    Hand size specimens of the big feldspar variant of gabbro, samples were collected from Carrock fell, Cumbria, UK and can be supplied in 3 sizes.

    We also supply Gabbro Big Feldspar thin sections for microscope study which are available to buy HERE.

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    66 in stock

  • Gabbro With Magnetite And Ilmenite – Cumbria £2.25£6.00 ex VAT

    Specimens of gabbro from Carrock Fell, Cumbria, UK which contain trace amounts of magnetite and ilmenite. Specimens are supplied in labelled card trays.

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    55 in stock

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    Ganister £2.25£3.50 ex VAT

    Ganister is a hard, fine grained , silica cemented sandstone. It is commonly, although not exclusively, found as seat earths below Carboniferous Coal Measure deposits & hence may contain root fossils. The name Ganister seems to have arisen in Yorkshire & Derbyshire where it was the local miners’ & quarrymens’ name for roadstone. It was particularly important around Sheffield where it was mined extensively to be used as a refractory liner for coke ovens & furnaces for the steel industry. Sheffield Ganister or Blue Ganister became the type example for this lithology. These particular specimens come from County Durham. They are supplied in labelled card trays.

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    Out of stock

  • Garnet Amphibolite £1.70£6.00 ex VAT

    Garnet Amphibolite supplied in a card tray with a label. This attractive rock from southern Norway has highly prominent garnet porphyroblasts (also known as cherry cake).

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    5 in stock

  • Garnet Mica Schist £2.25£6.00 ex VAT

    Garnet mica schist from Loch Tay, Scotland, showing in excellent detail the effects of regional metamorphism along plate boundaries, the garnets push the mica crystals around it due to being stronger, the specimens are available in various sizes or as a cut and lacquered piece, supplied in a card tray with a data label.

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    47 in stock

  • Garnet Mica Schist – Fauske £3.30£5.60 ex VAT

    Garnet Mica Schist from Fauske, Norway, displaying the details of regional metamorphism adjascent to a plate boundary. The garnet crystals stand out and protrude from the micaceous matrix. Specimens available in 2 sizes, and come supplied with a card tray and information label.

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    60 in stock

  • Garnet Peridotite £3.45£9.20 ex VAT

    Garnet peridotite igneous rock specimens found in the Gusdal Olivine Pit, Åheim, Norway is an ultra mafic rock which contains high pressure and temperature minerals such as olivine and garnet crystals. Exhibiting a green colouraiton with striking red spots, these samples were pushed up to the earths crust during the Caledonian orogeny during the Ordovician and Devonian period over 400 million years ago. The specimens are dense as expected and are ideal for children and serious collectors because of the colourful appearance as well as for higher educational use to describe deep mantle material as well as orogenic processes. The hand samples are available in various sizes and come supplied in a card tray with an information label.

    We also supply Garnet Peridotite thin sections for microscope study which are available to buy  HERE.

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    170 in stock

  • Glacial Clay £1.50£2.25 ex VAT

    Specimens of recent glacial clay (boulder clay till) from Beetham, Cumbria, UK. Specimens are perfect for education but may also be ideal for any British rock collectors. Pieces are supplied in a white card tray with an information label.

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    10 in stock

  • Glaucophane Schist £3.50£7.00 ex VAT

    Glaucophane Schist is also known as Blueschist. The blue-green colour comes from the dominant presence of the minerals Glaucophane (amphibole) & Lawsonite (related to epidote). These specimens were collected from the Isle of Anglesey, North Wales.

    We also supply Glaucophane Schist thin sections for microscope study which are available to buy HERE.

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    39 in stock

  • Gneiss – Lewisian £3.45£7.00 ex VAT

    Lewisian gneiss from Northwest Scotland, formed during the Pre-Cambrian period, making it among the oldest rocks in the UK, pushed to the surface during an oregenic event, Lewisian gneiss exhibits banded like most gneisses but is comprised of more dark, dense minerals, often igneous in origin. Specimens are available in 3 different sizes.

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  • Gneiss – Norway £2.25£6.00 ex VAT

    Gneiss from Evje, Norway, containing more feldspar and quartz than Lewisian gneiss from Scotland, giving it a pink colour, these specimens show excellent banding and text book crystal structure, supplied in 3 sizes, ideal for educational use.

    We also supply Gneiss thin sections for microscope study which are available to buy  HERE.

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    95 in stock

  • Granodiorite – Cumbria £2.25£6.00 ex VAT

    Granodiorite specimens from Cumbria, UK. These rocks originate from the Ordovician era, dating back roughly 443 to 448 million years. This Granodiorite, derived from Eskdale granite outcrops, exhibit a coarse-grained texture and represents a blend of granite and diorite characteristics.. While sharing mineral components like quartz, feldspar, and mica with granites, its distinctiveness lies in the elevated levels of plagioclase and mafic minerals like biotite, hornblende, and augite. Notably, this specific Granodiorite variety boasts a significant biotite content. Available in three different sizes, these specimens come supplied in a white card tray with information label.

    We also supply Granodiorite thin sections for microscope study which are available to buy  HERE.

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  • Graphic Granite £2.25£6.00 ex VAT

    Graphic granite is an igneous pegmatite rock from Iveland, Norway, which forms in intrusive batholithic bodies that have a felsic composition. As such, the rock is mainly composed of quartz and orthoclase feldspar crystals and lacks any mica, making the rock leucocratic. These samples have what is known as a graphic texture, due to the formation of the crystals, which result in an appearance similar to that of cuneiform text which was once used by ancient human cultures. A brightly coloured, eye catching rock, the samples are suitable for collectors and educational use at higher levels and come available in three sizes. Each specimens is supplied in a card tray with an information label.

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    93 in stock

  • Graphitic Schist £2.25£6.00 ex VAT

    Samples of graphitic schist from the Pre-Cambrian Dalradian formation, making them among the oldest rocks in the country. The samples come from the Ben Eagach schist formation at Foss mine, Scotland, UK and were collected by our own members of staff. The rock contains mica and graphite, which gives the specimens their unique mica appearance and greasy graphitic texture and lustre.

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    67 in stock

  • Greenschist £2.25£6.00 ex VAT

    Greenschist metamorphic rock specimens from Scotland, exhibiting excellent schistose texture and folliation and a deep green colouration due to the presence of chlorite and serpentine. Specimens are available in various sizes and supplied in a card tray with a data label.

    We also supply Greenschist thin sections for microscope study which are available to buy  HERE.

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    61 in stock

  • Greisen £2.25£6.00 ex VAT

    Greisen metamorphic rock specimens from Caldbeck Fells, Cumbria, composed mainly of quartz and mica with an off yellow colouration. The rock is known as an endoskarn and forms when hydrothermal fluid and heat alter a granitic body, resulting a heavily altered rock which may contain trace amounts of rare elements. These samples are suitable for advanced collectors and higher level education and are available in three sizes, each pieces will come supplied in a card tray with a label.

    We also supply Greisen thin sections for microscope study which are available to buy HERE.

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    24 in stock

  • Greywacke £2.25£6.00 ex VAT

    Specimens of Greywacke, collected from around Moffat, in Soctland. Greywacke is a type of dark, hard, grey or brown sandstone. It typically displays poor sorting with angular grains of quartz, feldspar & lithic fragments set in a very fine matrix. Greywacke is a turbidite, meaning it forms via deposition from sediment laden currents that move very rapidly downslope through water. These are fairly typical of the margins of continental shelves. These rocks are Silurian in age. Specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Greywacke thin sections for microscope study which are available to buy HERE.

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    30 in stock

  • Hornblende Gneiss £2.25£6.00 ex VAT

    Hornblende gneiss is a coarse grained metamorphic rock belonging to the gneiss family, its overall dark colouration is due to high levels of the mafic mineral hornblende, while quartz and feldspar are also present. The rock specimens come from southern Norway and are available in various optional sizes.

    We also supply Hornblende Gneiss thin sections for microscope study which are available to buy HERE.

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    194 in stock

  • Hornfels £2.25£3.50 ex VAT

    Hornfels, dark blue or black in colour collected from Shap quarry, Cumbria, a strong, durable rock, splintery when broken is comprised of mafic minerals, the rock may also exhibit acoustic properties. Supplied in a sized up card tray with an information label.

    We also supply Hornfels thin sections for microscope study which are available to buy HERE.

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    28 in stock

  • Hornfels (Banded) £2.25£6.00 ex VAT

    Banded hornfels exhibiting an alternating band feature, likely due to the original rock being layered such as sandstone, shale etc. The specimens come from Kentellen, Scotland, are available in different sizes and come in a card tray, suitable for school use.

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    10 in stock

  • Ignimbrite Welded Tuff £2.25£6.00 ex VAT

    Ignimbirte welded tuff is a pyroclastic rock of any origin formed through volcanic processes, the rock appears to show streaks of welded material on some surfaces and appears to be rhyolitic on the inside. Specimens come from Cumbria and are available in various sizes.

    We also supply Welded Tuff thin sections for microscope study which are available to buy HERE.

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    74 in stock

  • Ironstone – USA £2.00£30.00 ex VAT

    Specimens of Ironstone that have been collected from Breitung Mine, Marquette County, Negaunee, Michigan, USA. These specimens are a deep reddish brown in colour with some specimens exhibiting clear banding. Please note that banding is not visible on all pieces. These specimens are available in very limited supply with three sizes to choose from. They come supplied in a white card tray with information label.

    Additionally we also have one large display piece available, measuring approximately 18cm x 15cm at its widest points. This display specimen exhibits a distinct botryoidal texture on its top surface, making it an intriguing and appealing specimen to add to any collection.

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  • Kimmeridge Clay £2.25£6.00 ex VAT

    Kimmeridge clay is a fine grained sedimentary rock of Jurassic age, it can contain various fossils from invertebrates to large fauna such as dinosaurs and crocodiles. These specimens come from Kimmeridge, Dorest, UK and are available in various sizes.

    We also supply Kimmeridge Clay thin sections for microscope study which are available to buy HERE.

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  • Lapis Lazuli £1.50£12.00 ex VAT

    Specimens of Lapis Lazuli, collected from Afghanistan. Despite beliefs of lapis lazuli being a mineral and gemstone, it is in fact a metamorphic rock. Lazurite is the primary mineral that contributes to its distinct blue colouration. Calcite and pyrite are the other constituent minerals that make up this rock. Specimens are available in multiple sizes and come in a white card tray with an information label.

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  • Lapis Lazuli Display Piece – 1 £85.00 ex VAT

    A beautiful display piece of Lapis Lazuli, collected from Afghanistan. Lapis Lazuli is a metamorphic rock that consists primarily of the mineral Lazurite which gives it a distinct blue colouration. This piece has been polished to further amplify its colour. This superb display specimen measures approximately 14 x 10 x 5 cm at its widest and longest points. It measures approximately 1300 grams, and is capable of standing freely. Due to the valuble nature of our display pieces, they will all be shipped via courier only. Supplied with an information label.

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    1 in stock

  • Lapis Lazuli Display Piece – 2 £190.00 ex VAT

    A beautiful display piece of Lapis Lazuli, collected from Afghanistan. Lapis Lazuli is a metamorphic rock that consists primarily of the mineral Lazurite which gives it a distinct blue colouration. This piece has been polished to further amplify its colour. This superb display specimen measures approximately 17 x 15 x 6cmat its widest and longest points. It measures approximately 2900 grams, and is capable of standing freely. Due to the valuble nature of our display pieces, they will all be shipped via courier only. Supplied with an information label.

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    1 in stock

  • Lapis Lazuli Display Piece – 3 £75.00 ex VAT

    A beautiful display piece of Lapis Lazuli, collected from Afghanistan. Lapis Lazuli is a metamorphic rock that consists primarily of the mineral Lazurite which gives it a distinct blue colouration. This piece has been polished to further amplify its colour. This superb display specimen measures approximately 15 x 10 x 3 cm at its widest and longest points. It measures approximately 1200 grams, and is capable of standing freely. Due to the valuble nature of our display pieces, they will all be shipped via courier only. Supplied with an information label.

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    1 in stock

  • Lapis Lazuli Tumblestones £2.00£8.75 ex VAT

    Beautiful Lapis Lazuli Tumblestones, cut and polished and sourced from Afghanistan. Despite beliefs of lapis lazuli being a mineral and gemstone, it is in fact a metamorphic rock. Lazurite is the primary mineral that contributes to its distinct blue colouration. Calcite and pyrite are the other constituent minerals that make up this rock. These tumblstones measure 1 – 2″ inches in size and come in a polythene bag. Available to buy as single stones or in lots of five.

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  • Lignite (Brown Coal) £2.25£6.00 ex VAT

    Specimens of Lignite (Brown Coal), collected from Germany. Lignite is a soft, combustible sedimentary rock which forms by the natural compression of peat material. It has a high carbon content 25 – 35% & a moisture content up to 66%. The high volatile matter content makes it easier to convert into gas and liquid petroleum products than higher ranking coals. It is used almost exclusively for the generation of electricity in countries such as Greece & China. These pieces are Miocene in age. They are available in multiple sizes and come in a white card tray with an information label.

    We also supply Lignite thin sections for microscope study which are available to buy HERE.

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    90 in stock

  • Limestone £2.25£6.00 ex VAT

    Specimens of Limestone, collected from Derbyshire. Limestone is a common, well known sedimentary rock. It consists of the calcium-rich shells, bones, and skeletons of the fauna that dominated during that period. It was laid down approximately 350 million years ago in semi tropical seas and comes from the Dinantian epoch of the Lower Carboniferous. This rock is very pure, about 98% soluble in rainwater (over time) leaving only residual clay. Its uses include aggregate, building stone, the manufacture of cement, paper & calcium carbide. Available in various sizes, each piece comes supplied in a white card tray with information label.

    We also supply Limestone thin sections for microscope study which are available to buy HERE.

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    100 in stock

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    Magnesian Limestone £1.38£2.62 ex VAT

    Magnesian Limestone. A dolomite rich rock from the Permian formations of North Yorkshire.

    We also supply Magnesian Limestone thin sections for microscope study which are available to buy HERE.

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    Out of stock

  • Marble £2.25£6.00 ex VAT

    White marble exhibiting medium interlocking crystals suggesting a limestone rock origin These particular specimens are from Torrin Quarry on the Isle of Skye, Scotland and are available in three optional sizes.

    We also supply Marble thin sections for microscope study which are available to buy HERE.

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    51 in stock

  • Marble With Forsterite £1.50£6.00 ex VAT

    Marble with forsterite which has been hydrated to serpentine. Found in Ledmore Quarry, Sutherland. Scottish Highlands. Specimens are supplied in a card tray with a information label.

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  • Marl (Red) £2.25£3.50 ex VAT

    Specimens of Red Marl, collected from Westbury upon Severn in Gloucestershire, UK. Marl is a term that describes an unconsolidated sedimentary rock, that consists of clay and lime. This red marl is part of the Keuper Marls which dates to the early Triassic Mercia Mudstone group. It is a calcium carbonate rich mudstone which forms in Sahara-like desert conditions. The red colouration in these specimens comes from the presence of oxidised iron compounds. Specimens are available in multiple sizes and come in a white card tray with an information label.

    We also supply Red Marl thin sections for microscope study which are available to buy HERE.

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  • Marl (Tea Green) £2.25£6.00 ex VAT

    Specimens of Tea Green Marl, collected from Gloucestershire, UK. Marl is a term that describes an unconsolidated sedimentary rock, that consists of clay and lime. This Tea Green Marl is part of the Blue Anchor Formation which dates to the Triassic Mercia Mudstone group. This is known as the Keuper Marls. This lithology typically comprises dolomitic silty to porcelanous mudstone. These specimens are shallow marine in origin. These pieces are available in multiple sizes and come in a white card tray with an information label.

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    50 in stock

  • Metagabbro £2.25£6.00 ex VAT

    Metagabbro specimens from Lom, Central Norway. Also known as scapolite-hornblende due to the absence of feldspar in the rock are available in 3 optional sizes and come supplied in a card tray with a data label.

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    40 in stock

  • Metaquartzite – Anglesey £2.25£6.00 ex VAT

    Metaquartzite is a low grade metamorphic rock often composed mainly of quartz, however, other minerals can exist, and mineral impurities during crystalisation can result in differing colours, these particular samples from Anglesey have a green colouration to them. The rock specimens are available in 3 different sizes and come in a card tray with a data label.

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  • Metaquartzite – Scotland £2.25£6.00 ex VAT

    Metaquartzite collected from Onich near Ballachulish, Scotland, which detail text book quality metaquartzite, pure white, hard and composed mainly of quartz with very few impurities, these rock specimens are ideal for educational use or as part of a larger collection of rocks, supplied in a card tray with a label.

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  • Mica Schist £2.25£6.00 ex VAT

    Dalradian mica schist is a famous metamorphic rock, composed mostly of the minerals muscovite mica with occurrences of quartz and feldspar, these rock specimens are Pre-Cambrian in age and come from Scotland, supplied in a card tray with an information label.

    We also supply Mica Schist thin sections for microscope study which are available to buy HERE.

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    27 in stock

  • Microgranite – Cumbria £2.25£6.00 ex VAT

    Micro Granite is a variation of the granite group of rocks, composed of the minerals quartz, feldspar and mica. These particular samples were collected from Threlkeld quarry, Cumbria, UK. They are supplied in a small white tray with an information label.

    We also supply Microgranite thin sections for microscope study which are available to buy HERE.

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    193 in stock

  • Migmatite £3.70£10.35 ex VAT

    Migmatites are an unusual rock that is a mixture of both igneous & metamorphic lithologies.The samples were collected by our staff and come from central Norway. Each specimen comes in a card tray with a label.

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    60 in stock

  • Millstone Grit £2.25£6.00 ex VAT

    Specimens of Millstone Grit, collected from Horwich, Bolton in the UK. Millstone Grit is part of the sandstone family and ranges from fine to very coarse grained. It is a feldspathic sandstone, interbedded with grey siltstones and mudstones, with subordinate marine shaly mudstone, claystone, coals and seatearths. It is Carboniferous (Namurian) in age and laid down in estuarine to tidal environments. Millstone Grit forms many prominent features throughout the north of England. These specimens are available in multiple sizes and come supplied in a white card tray with an information label.

    We also supply Millstone Grit thin sections for microscope study which are available to buy HERE.

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    86 in stock

  • Mudstone £2.25£6.00 ex VAT

    Specimens of Mudstone, collected from Lancashire. Mudstone is a very fine grained sedimentary rock, that consists of clay minerals and tiny quartz grains. Mudstone lacks a well developed bedding structure or fissility. This lithology is typical of low energy environments, such as tidal flats, lakes or deep marine environments. These specimens date to the Carboniferous period, approximately 359 – 299 million years ago. The specimens are availeable in multiple sizes, and come in a white card tray with an information label.

    We also supply Mudstone thin sections for microscope study which are available to buy HERE.

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    300 in stock

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