Rock Identifier

Category

Organic Gemstone (Sedimentary Classification)

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

Learn about Organic Gemstone (Sedimentary Classification) 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

Turquoise and Red Coral (Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)) — mineral

Turquoise and Red Coral

Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)

Chert (variations include Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

Jasper (Red-Brown) (Silicon Dioxide (SiO2) with Iron Oxide impurities) — sedimentary

Jasper (Red-Brown)

Silicon Dioxide (SiO2) with Iron Oxide impurities

Ironstone concretion / Limonitic Sandstone (Goethite/Hematite Cemented Sandstone (Hydrated Iron Oxide)) — sedimentary

Ironstone concretion / Limonitic Sandstone

Goethite/Hematite Cemented Sandstone (Hydrated Iron Oxide)

Chert (specifically Red Chert/Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Red Chert/Jasper variety)

Silicon Dioxide (SiO2)

Amber (Succinite (approximate formula C10H16O)) — mineral

Amber

Succinite (approximate formula C10H16O)

Turquoise and Spiny Oyster (Heishi style beads) (Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Spondylus (Spiny Oyster shell)) — mineral and organic gemstone

Turquoise and Spiny Oyster (Heishi style beads)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Spondylus (Spiny Oyster shell)

mineral and organic gemstone

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Amber (Succinite (fossilized tree resin), C10H16O) — Organic Gemstone

Amber

Succinite (fossilized tree resin), C10H16O

Organic Gemstone

Pearl (Calcium carbonate (Aragonite/Calcite) - CaCO3) — gemstone

Pearl

Calcium carbonate (Aragonite/Calcite) - CaCO3

Chert (Flint) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Pink variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Pink variety)

Microcrystalline Quartz (SiO2)

Amber (Resinite (Succinite if from the Baltic); Chemical Formula: C10H16O (approximate)) — Organic Diamond/Gemstone (often associated with Sedimentary sequences)

Amber

Resinite (Succinite if from the Baltic); Chemical Formula: C10H16O (approximate)

Organic Diamond/Gemstone (often associated with Sedimentary sequences)

Weathered pink granite cobble (Granite, likely biotite-bearing pink granite; exact variety cannot be confirmed from a photograph) — igneous

Weathered pink granite cobble

Granite, likely biotite-bearing pink granite; exact variety cannot be confirmed from a photograph

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)

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

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

Chert (Nodule)

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Chert (and Chert-based Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — Sedimentary

Chert (and Chert-based Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (and Quartzite) (Microcrystalline silica (SiO2)) — sedimentary

Chert (and Quartzite)

Microcrystalline silica (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Brown variety / Common Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Brown variety / Common Jasper)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Amber Dragonfly Brooch (Succinited (Baltic Amber)) — fossil

Amber Dragonfly Brooch

Succinited (Baltic Amber)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (often called Flint or Chalcedony Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Chalcedony Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Chert Nodule) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chert Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Natural White Pearl (Calcium Carbonate (Aragonite/Calcite) with Conchiolin - CaCO3) — mineraloid

Natural White Pearl

Calcium Carbonate (Aragonite/Calcite) with Conchiolin - CaCO3

Chert (Jasper/Agate Peat) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Agate Peat)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper variety)

Chert (Silicon Dioxide, SiO2)

Amber (Succinite / Fossilized Resin (C10H16O)) — fossil

Amber

Succinite / Fossilized Resin (C10H16O)

Amber (Succinite (Fossilized Resin)) — gemstone

Amber

Succinite (Fossilized Resin)

Amber (Succinited (fossilized tree resin)) — fossil

Amber

Succinited (fossilized tree resin)

Amber (Succinite) — mineral

Amber

Succinite

Fossiliferous Shale (Carbonaceous Shale (with potential plant/aquatic fossils)) — sedimentary

Fossiliferous Shale

Carbonaceous Shale (with potential plant/aquatic fossils)

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

Banded Chert / Flint

Microcrystalline Quartz (SiO2)

Pearl (Calcium Carbonate (primarily Aragonite and Calcite), CaCO3) — mineral

Pearl

Calcium Carbonate (primarily Aragonite and Calcite), CaCO3

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

Chert (Black Flint)

Silicon Dioxide (SiO2)

Amber (Succinite) — Organic Gemstone (sedimentary associations)

Amber

Succinite

Organic Gemstone (sedimentary associations)

Chert (Green Fossilized Algae or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Green Fossilized Algae or Jasper)

Silicon Dioxide (SiO2)