Smokey Quartz

Smokey quartz is a dark variation of quartz, it is often translucent and a shade of black or grey however, some specimens may be completely opaque and black. The colour is due to free silicon at the time the quartz was forming, formed from silicon dioxide from natural radiation. These particular mineral specimens are of the individual crystal points and are of very high quality, they display the quartz crystals termination very well and exhibit a very dark grey sometimes black colouration with minimal transparency, almost opaque. The crystals come from Madagascar and come supplied in two different sizes, in a white card tray with information label. Please note that size variation is approximate, and will vary between pieces.

Rutilated quartz is a variation of quartz which contains thin fibrous rutile crystals within it, often randomly orientated. Rutiles are a titanium mineral, dense and black, it is a common accessory mineral in high-temperature and high-pressure metamorphic rocks and in igneous rocks but found in very few locations around the world. These mineral specimens are of a dull, sometimes yellow coloured quartz which contain the rutile crystals.Where as most minerals devalue when they contain impurities or inclusions, rutilated quartz is in fact often prized for this very reason. These samples are available various sizes and will come supplied in a card tray with an information label.