Rock Identifier

Category

Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material)

Browse organic gemstone (not a rock or mineral in the traditional sense, but bio mineralized material) specimens identified by the Rock Identifier community.

Ruby (Raw Corundum) (Corundum (Aluminum Oxide with Chromium), Al2O3:Cr) — mineral

Ruby (Raw Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Amber (Succinicum (C10H16O)) — mineral

Amber

Succinicum (C10H16O)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Jade (likely Jadeite) (Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)) — Mineral

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Pearl (Calcium Carbonate (CaCO3) - mainly Aragonite and Calcite) — mineral

Pearl

Calcium Carbonate (CaCO3) - mainly Aragonite and Calcite

Moonstone (Adularia (Potassium Aluminum Silicate, KAlSi3O8)) — mineral

Moonstone

Adularia (Potassium Aluminum Silicate, KAlSi3O8)

Spessartine Garnet (Manganese aluminum silicate (Mn2+3Al2(SiO4)3)) — mineral

Spessartine Garnet

Manganese aluminum silicate (Mn2+3Al2(SiO4)3)

Amber / Copal (Fossilized Tree Resin (Succinate)) — Mineraloid

Amber / Copal

Fossilized Tree Resin (Succinate)

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

Chert / Flint

Silicon Dioxide (SiO2)

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

Chert (Jasper)

Silicon dioxide (SiO2)

Ruby (Corundum (Al2O3)) — mineral

Ruby

Corundum (Al2O3)

Pyrite (Fool's Gold) Cube (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold) Cube

Iron Sulfide (FeS2)

Petrified Wood (Silicified Wood (primarily SiO2)) — metamorphic

Petrified Wood

Silicified Wood (primarily SiO2)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Amber and Citrine Quartz (Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)) — mineral

Amber and Citrine Quartz

Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Puddingstone (Conglomerate) — sedimentary

Puddingstone

Conglomerate

Petrified Wood (Silicified wood (Quartz/Chalcedony - SiO2)) — mineral

Petrified Wood

Silicified wood (Quartz/Chalcedony - SiO2)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Chert (often called Flint in dark varieties) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint in dark varieties)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Pearl (Aragonite (CaCO3) with Conchiolin) — mineral

Pearl

Aragonite (CaCO3) with Conchiolin

Sardonyx Cameo (Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz) — Mineral

Sardonyx Cameo

Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz

Eye Agate (Sulemani Agate) (Banded Chalcedony (SiO2)) — mineral

Eye Agate (Sulemani Agate)

Banded Chalcedony (SiO2)

Moss Agate (Chalcedony (Silicon Dioxide - SiO2) with inclusions) — Mineral

Moss Agate

Chalcedony (Silicon Dioxide - SiO2) with inclusions

Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with inclusions of Iron Oxide or Chlorite) — mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Iron Oxide or Chlorite

Nephrite Jade (Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Chlorastrolite (Greenstone) (Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O) — mineral

Chlorastrolite (Greenstone)

Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O

Petrified Wood (Silicified Wood (primarily Quartz / Chalcedony: SiO2)) — metamorphic

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Herkimer Diamond (Quartz (Silica - SiO2)) — mineral

Herkimer Diamond

Quartz (Silica - SiO2)

Petrified Wood (Silicified wood (Quartz/Chalcedony - SiO2)) — sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony - SiO2)

Quartz (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO2 - Silicon Dioxide)

Chert (Green variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Green variety)

Silicon Dioxide (SiO2)

Chert (Yellow/Brown Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow/Brown Jasper)

Silicon Dioxide (SiO2)

Amber (Resinite / Fossilized Tree Resin) — mineral

Amber

Resinite / Fossilized Tree Resin

Chert (varieties include Flint and Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert with Quartz Veining (Silicon Dioxide (SiO2)) — sedimentary

Chert with Quartz Veining

Silicon Dioxide (SiO2)