White dolomite crystal beds on matrix, excellent crystal forms which come from the Pallieres Mine, Languedoc in France. These mineral specimens exhibit a brilliant white colouration and contrasts nicely with the dark, grey,rough matrix the crystals have grown on. Dolomite is a anhydrous carbonate mineral composed of calcium magnesium carbonate, due to no impurities being present during the minerals formation, they crystals are white (unlike our pink and brown varieties). Dolomite crystals often form in tri-rhombohedral shapes with curved faces, this aspect of the mineral can be seen on these specimens, although observation under a magnifying lens on some specimens will enhance this. Available in various optional sizes, the specimens will come supplied in a card tray with an information label.