Rock Identifier

Category

Organic Gemstone (Sedimentary Associations)

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

Learn about Organic Gemstone (Sedimentary Associations) in the encyclopedia

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Red Garnet

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Oil Shale

Jet

Petrified Wood

Amber

Red Coral (Sponge Coral / Apple Coral) (Corallium rubrum (calcium carbonate / organic gem)) — gemstone

Red Coral (Sponge Coral / Apple Coral)

Corallium rubrum (calcium carbonate / organic gem)

Natural Freshwater Pearl (Calcium Carbonate (Aragonite and Calcite), CaCO3) — gemstone

Natural Freshwater Pearl

Calcium Carbonate (Aragonite and Calcite), CaCO3

Desert Rose (Baryte or Gypsum rosette) (Baryte (BaSO4) or Gypsum (CaSO4·2H2O)) — mineral

Desert Rose (Baryte or Gypsum rosette)

Baryte (BaSO4) or Gypsum (CaSO4·2H2O)

Bismuthinite with Chalcopyrite and Quartz (Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)) — mineral

Bismuthinite with Chalcopyrite and Quartz

Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Red Coral (Corallium rubrum) — mineral

Red Coral

Corallium rubrum

Chert (Cherty Flint/Jasper variety) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Cherty Flint/Jasper variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Amber (Fossilized Tree Resin) — gemstone

Amber

Fossilized Tree Resin

Amber (Succiniferous fossil resin (C10H16O)) — gemstone

Amber

Succiniferous fossil resin (C10H16O)

Amber (Succiniferous organic material (Succinite)) — fossil

Amber

Succiniferous organic material (Succinite)

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Epidote in Matrix (Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)) — metamorphic

Epidote in Matrix

Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Black Limestone with Calcite Veining (Bituminous Limestone (CaCO3 with Organic Carbon inclusions)) — sedimentary

Black Limestone with Calcite Veining

Bituminous Limestone (CaCO3 with Organic Carbon inclusions)

Seashell (Cone Snail Shell) (Conus sp. (Calcium Carbonate, CaCO3)) — fossil

Seashell (Cone Snail Shell)

Conus sp. (Calcium Carbonate, CaCO3)

Shale or Slate (Shale (Sedimentary) or Slate (Metamorphic)) — sedimentary or metamorphic

Shale or Slate

Shale (Sedimentary) or Slate (Metamorphic)

sedimentary or metamorphic

Chert (often called Flint or Jasper) (Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)

Amber (Cherry Amber) (Succinite (C10H16O)) — Organic Gemstone

Amber (Cherry Amber)

Succinite (C10H16O)

Organic Gemstone

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Pyrite in Shale (Iron Disulfide (FeS2)) — mineral

Pyrite in Shale

Iron Disulfide (FeS2)

Precious Red Coral (Corallium rubrum (Calcium Carbonate, CaCO3)) — Mineral (Organic Gemstone)

Precious Red Coral

Corallium rubrum (Calcium Carbonate, CaCO3)

Mineral (Organic Gemstone)

Chert (often called Flint when dark) (Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (often called Flint when dark)

Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)

Coal (most likely Bituminous or Anthracite) (Coal (organic sedimentary rock)) — Sedimentary

Coal (most likely Bituminous or Anthracite)

Coal (organic sedimentary rock)

Chert / Flint (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Cryptocrystalline Quartz (SiO2)

Amber (Succinite) — mineral

Amber

Succinite

Red Coral (Corallium rubrum) — gemstone

Red Coral

Corallium rubrum

Chrysocolla (Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O

Amber Inlay Jewelry (Fossilized Resin (C10H16O)) — Organic Gemstone (Biogenic)

Amber Inlay Jewelry

Fossilized Resin (C10H16O)

Organic Gemstone (Biogenic)

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

Fossil Coral / Crinoid Stem section

Anthozoa / Crinoidea fossil

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

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Gossan (Iron Hat) (Iron oxide-rich weathered rock (primarily Limonite and Goethite with secondary Quartz)) — mineral

Gossan (Iron Hat)

Iron oxide-rich weathered rock (primarily Limonite and Goethite with secondary Quartz)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Epidote (with Quartz and Feldspar) (Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)) — metamorphic

Epidote (with Quartz and Feldspar)

Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)

Amber (Copal) (Succinite (fossilized tree resin)) — mineral

Amber (Copal)

Succinite (fossilized tree resin)

Amber (Succinite (Fossilized Resin)) — gemstone

Amber

Succinite (Fossilized Resin)

Amber (Fossilized Tree Resin (C10H16O)) — gemstone

Amber

Fossilized Tree Resin (C10H16O)

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

Amber

Succinite (fossilized resin, C10H16O)

Amber (Fossilized tree resin) — gemstone

Amber

Fossilized tree resin

Chert / Flint (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Shale with Iron Staining (Fissile Mudrock (Sedimentary Rock)) — sedimentary

Shale with Iron Staining

Fissile Mudrock (Sedimentary Rock)

Chert / Flint (Cryptocrystalline Quartz (Silicon Dioxide, SiO2)) — sedimentary

Chert / Flint

Cryptocrystalline Quartz (Silicon Dioxide, SiO2)

Lazulite (Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2) — mineral

Lazulite

Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2