Crystals and Minerals

Cinnabar is Mercury Sulfide or HgS. It is a brick-red rock, generally, and is occasionally …

Celestite occurs in blue, transparent crystals found in clumps or geodes in Britain, Madagascar, Egypt, …

Bloodstone, or heliotrope, is green chalcedony with flecks of red due to the presence of iron oxide. …

Black salt is a common term that is applied to two different salt-related products. Black …

Azurite is a soft, bright blue copper carbonate mineral with high copper content. It was …

Aventurine is a microcrystalline quartz that contains various mineral inclusions that give it a sparkling appearance. Aventurine …