Red Coral (Precious Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
sedimentary
Category
Organic Gemstone
Browse organic gemstone specimens identified by the Rock Identifier community.
Amber
Resinite / Fossilized Tree Resin
mineral
Amber with inclusion
Amber (Fossilized Tree Resin)
mineral
Amber
Succinite
mineral
Precious Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Mineral (Organic Gemstone)
Pink Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Black Freshwater Pearls
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
mineral
Amber
Succinite (Formula: C10H16O)
Mineraloid
Amber
Succinite
Mineraloid
Amber (Copal)
Succinite (fossilized tree resin)
mineral
Amber
Succinite (approximate formula C10H16O)
mineraloid
Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Organic (Sedimentary-associated)
Amber (Dark/Black Variety)
Succinite (Resinite), C10H16O
mineral
Amber
Succinite (Approximate formula: C10H16O)
Mineraloid
Amber
Succinite (Approximate formula: C10H16O)
mineral
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Precious Red Coral
Corallium rubrum / Corallium japonicum
mineral (organic gemstone)
Amber
Succinite (specifically for Baltic amber); Approximate formula: C10H16O
Organic Gemstone (Mineraloid)
Amber
Succinite (C10H16O)
mineral
Amber
Succinite (fossilized resin)
Organic Mineraloid
Amber
Succinite (specific to Baltic amber), fossilized tree resin
mineraloid
Baltic Amber (Butterscotch variety)
Succinite
Organic Gemstone/Mineraloid
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (C10H16O)
Organic Gemstone (Mineraloid)
Amber (specifically Cherry Amber)
Succinite (with the chemical formula C10H16O)
Organic Gemstone (not a mineral)
Pearl (likely Freshwater or Akoya Cultured)
Aragonite / Conchiolin composite (CaCO3)
Mineralloid (Organic gemstone)
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Organic Gemstone (not a mineral)
Amber / Copal
Succinite (fossilized resin)
mineraloid
Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3 with Carotenoid pigments)
Mineraloid (Organic Gemstone)
Amber
Succinite (organic mineraloid); Chemical formula: C10H16O
mineral
Amber
Succinicum (Organic compound, primarily C10H16O)
Organic Gemstone (Mineraloid)
Amber (Cherry or Red variety)
Succinite (with various trace amounts of organic compounds)
Organic Gemstone (not a rock)
Amber Inlay Jewelry
Fossilized Resin (C10H16O)
Organic Gemstone (Biogenic)
Mother of Pearl (Nacre)
Calcium Carbonate (primarily aragonite, with conchiolin)
Organic Gemstone/Biomineral
Baltic Amber (Butterscotch or Egg Yolk Variety)
Fossilized Tree Resin (Succinite); Approximate formula: C10H16O
Organic Gemstone (Succinite)
Coral (Precious Coral)
Corallium rubrum (Red Coral), Paracorallium japonicum (Momo Coral), Pleurocorallium elatius (Sardinian Coral), various other species within the Corallidae family. Chemically, it's primarily Calcium Carbonate (CaCO 3 ).
Mineral, Organic Gemstone
Pearl
Calcium Carbonate (Aragonite or Calcite) and Conchiolin
Mineraloid
Amber
Succinite (fossilized tree resin)
mineraloid
Amber
Succinite
Organic Gemstone (sedimentary associations)
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (chemical formula: C10H16O)
Organic Gemstone (not a rock or mineral)
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (C10H16O)
Organic Gemstone (fossilized resin)
Amber
Succinite (specifically for Baltic amber); chemical formula approx. C10H16O
Organic Gemstone (fossilized resin)
Red Coral
Corallium rubrum (Calcium Carbonate, CaCO3)
Organic Gemstone (Sedimentary classification)