Brown Aragonite Sphere | 107 mm, 4.2 in | 1.9 kg unheated sapphire This deep color is no

This deep color is no longer being produced from this locality

Clarity:  Clean to the eye

and is well-known for its great range of colors

This Barite crystal would be a beautiful addition to any new or existing collection

Color: Neon Green

Brown Aragonite Sphere | 107 mm, 4.2 in | 1.9 kg unheated sapphire This deep color is noThe principal member of the Aragonite Group, aragonite is the second most common polymorph of natural calcium carbonate (the most common is calcite). It is significantly less widespread and abundant than calcite and is formed under a much narrower range of physiochemical conditions. It is metastable relative to calcite and often converts to calcite accompanying changes in the environment. It is nearly always a low temperature, near surface mineral.