Rock Identifier

Category

Organic Gemstone (Mineraloid)

Browse organic gemstone (mineraloid) specimens identified by the Rock Identifier community.

Learn about Organic Gemstone (Mineraloid) in the encyclopedia

Jet

Dendritic Agate (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Pearl (likely Freshwater or Akoya Cultured) (Aragonite / Conchiolin composite (CaCO3)) — Mineralloid (Organic gemstone)

Pearl (likely Freshwater or Akoya Cultured)

Aragonite / Conchiolin composite (CaCO3)

Mineralloid (Organic gemstone)

Amber (Fossilized Tree Resin) — gemstone

Amber

Fossilized Tree Resin

Amber (Succinite (fossilized resin, C10H16O)) — mineral

Amber

Succinite (fossilized resin, C10H16O)

Amber (Succinite (fossilized tree resin)) — fossil

Amber

Succinite (fossilized tree resin)

Baltic Amber (Succinite (Fossilized Resin)) — fossil

Baltic Amber

Succinite (Fossilized Resin)

White seed-bead gemstone strand, likely freshwater pearl or shell pearl (Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image) — gemstone

White seed-bead gemstone strand, likely freshwater pearl or shell pearl

Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Amber (Succinite (C10H16O)) — gemstone

Amber

Succinite (C10H16O)

Amber (Succinite (Fossilized Tree Resin)) — fossil

Amber

Succinite (Fossilized Tree Resin)

Black Freshwater Pearls (Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3) — mineral

Black Freshwater Pearls

Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3

Amber (Succinite (approximate formula C10H16O)) — mineral

Amber

Succinite (approximate formula C10H16O)

Amber (Succinite (C10H16O)) — mineral

Amber

Succinite (C10H16O)

Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon Dioxide (SiO2)

Amber (Succinite (approximate formula C10H16O)) — mineral

Amber

Succinite (approximate formula C10H16O)

Amber (and Citrine Quartz) (Succinite (Amber) and Silicon Dioxide (SiO2)) — Organic Mineraloid and Mineral

Amber (and Citrine Quartz)

Succinite (Amber) and Silicon Dioxide (SiO2)

Organic Mineraloid and Mineral

Chert (Jasper/Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint)

Microcrystalline Quartz (SiO2)

Fossil Coral / Crinoid Stem section (Anthozoa / Crinoidea fossil) — fossil

Fossil Coral / Crinoid Stem section

Anthozoa / Crinoidea fossil

Garden Quartz (Lodolite / Inclusion Quartz) (Quartz with inclusions (SiO2 with various mineral inclusions)) — gemstone

Garden Quartz (Lodolite / Inclusion Quartz)

Quartz with inclusions (SiO2 with various mineral inclusions)

Amber (Succiniferous fossil resin (C10H16O)) — mineral

Amber

Succiniferous fossil resin (C10H16O)

Amber (Succinite (Formula: C10H16O)) — mineral

Amber

Succinite (Formula: C10H16O)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Tektite (Indochinite) (Tektite (High-silica natural glass)) — mineraloid / impact glass

Tektite (Indochinite)

Tektite (High-silica natural glass)

mineraloid / impact glass

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag) (Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)) — mineraloid / industrial byproduct

Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)

Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)

mineraloid / industrial byproduct

Chert / Flint (Silicon dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon dioxide (SiO2)

Pearl (Calcium Carbonate (CaCO3) - Aragonite/Calcite organic gemstone) — mineral

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite organic gemstone

Mixed Gemstone and Mineral Collection (Silicon Dioxide (SiO2) based minerals and others) — mineral

Mixed Gemstone and Mineral Collection

Silicon Dioxide (SiO2) based minerals and others

Pink Opal (Hydrated silica (SiO2 "n H2O)) — mineral

Pink Opal

Hydrated silica (SiO2 "n H2O)

Moss Agate (Silicon Dioxide (Chalcedony variety) with green hornblende or chlorite inclusions - SiO2) — gemstone

Moss Agate

Silicon Dioxide (Chalcedony variety) with green hornblende or chlorite inclusions - SiO2

Precious Coral (Corallium rubrum (Calcium Carbonate, CaCO3)) — mineral

Precious Coral

Corallium rubrum (Calcium Carbonate, CaCO3)

Amber (Succinite (fossilized organic resin)) — mineral

Amber

Succinite (fossilized organic resin)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Blue Apatite (Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))

Pearl (Calcium Carbonate (CaCO3) - Aragonite/Calcite) — mineral

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite

Chert (Flint Nodules) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint Nodules)

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — gemstone

Jasper

Microcrystalline Quartz (SiO2)

Amber (Succinates (fossilized tree resin), approximately C10H16O) — organic gemstone

Amber

Succinates (fossilized tree resin), approximately C10H16O

organic gemstone

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Amber (Fossilized Tree Resin) — gemstone

Amber

Fossilized Tree Resin

Amber (Succiniferous fossil resin (C10H16O)) — gemstone

Amber

Succiniferous fossil resin (C10H16O)