Chert / Flint
Chert (varieties include Flint)
Sedimentary
Category
Organic Gemstone (Succinite)
Browse organic gemstone (succinite) specimens identified by the Rock Identifier community.
Learn about Organic Gemstone (Succinite) in the encyclopedia
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Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Red Coral
Corallium rubrum (for precious red coral), although other species like Corallium japonicum and Paracorallium are also used.
Organic Gemstone (not a rock or mineral in the traditional sense, but bio-mineralized material)
Amber
Succinates (Organic Fossilized Resin)
mineral
Pearl
Calcium Carbonate (Aragonite) - CaCO3
mineral
Pearl (Biogenic Gemstone)
Calcium Carbonate (Aragonite and Calcite) with Conchiolin
gemstone
Pearl
Aragonite (CaCO3) with Conchiolin
mineral
Pearl
Calcium Carbonate (primarily Aragonite and Calcite), CaCO3
mineral
Pearl (as a biogenic mineral/gemstone)
Calcium Carbonate (mostly Aragonite), CaCO3
mineral