Rock Identifier

Category

Organic Gemstone

Browse organic gemstone specimens identified by the Rock Identifier community.

Learn about Organic Gemstone in the encyclopedia

Jet

Sapropel

Red Garnet

Bituminous Shale

Bituminous Shale

Black Shale

Petrified Wood

Amber

Oil Shale

Peat

Pearl

Lizard Skin Jasper

Sunstone

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

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

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

Chert (Jasper/Agate Peat)

Microcrystalline Quartz (SiO2)

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Amber (Succinite (specific to Baltic amber), fossilized tree resin) — Organic Mineraloid

Amber

Succinite (specific to Baltic amber), fossilized tree resin

Organic Mineraloid

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Polished amber cabochon (Amber (fossilized plant resin; chiefly carbon, hydrogen, and oxygen, with variable organic compounds)) — gemstone

Polished amber cabochon

Amber (fossilized plant resin; chiefly carbon, hydrogen, and oxygen, with variable organic compounds)

Baltic amber beads (Amber (fossilized plant resin), commonly succinite; organic polymer dominated by resin acids) — gemstone

Baltic amber beads

Amber (fossilized plant resin), commonly succinite; organic polymer dominated by resin acids

Polished amber (Fossilized plant resin; primarily organic terpenoid compounds (succinite when Baltic-type)) — gemstone

Polished amber

Fossilized plant resin; primarily organic terpenoid compounds (succinite when Baltic-type)

Probable amber fragment (Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)) — gemstone

Probable amber fragment

Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)

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

Pearl

Aragonite / Calcium Carbonate (CaCO3)

Naga Silver-Inlaid Ebony and Bone/Horn Beads (Diospyros (Ebony) or Keratin (Horn) with Silver/White-Metal Inlay) — Organic (Anthropological Artifact)

Naga Silver-Inlaid Ebony and Bone/Horn Beads

Diospyros (Ebony) or Keratin (Horn) with Silver/White-Metal Inlay

Organic (Anthropological Artifact)

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

Chert (Jasper variety)

Chert (Silicon Dioxide, SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert (Field Flint)

Microcrystalline Quartz (SiO2)

Weathered chert or silicified limestone (Microcrystalline quartz (SiO₂), likely chert formed by silicification of carbonate rock) — sedimentary

Weathered chert or silicified limestone

Microcrystalline quartz (SiO₂), likely chert formed by silicification of carbonate rock

Petrified Wood (Silicified Wood (primarily SiO2 - Silicon Dioxide / Chalcedony)) — metamorphic

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide / Chalcedony)

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

Chert Pebble

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Brown variety / Common Jasper)

Microcrystalline Quartz (SiO2)

Pearl (Calcium Carbonate (CaCO3) in the form of orthorhombic Aragonite and Conchiolin) — mineral

Pearl

Calcium Carbonate (CaCO3) in the form of orthorhombic Aragonite and Conchiolin

Translucent amber-colored gemstone, likely citrine or amber (Most plausibly quartz (SiO₂), specifically citrine; amber would be fossilized resin (organic polymer)) — gemstone

Translucent amber-colored gemstone, likely citrine or amber

Most plausibly quartz (SiO₂), specifically citrine; amber would be fossilized resin (organic polymer)

Chert (Flint nodule) (Chert (SiO2)) — sedimentary

Chert (Flint nodule)

Chert (SiO2)

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 Jasper or Flint type) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Jasper or Flint type)

Microcrystalline Quartz (SiO2)

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

Chert (Chert Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Banded Chert / Flint

Microcrystalline Quartz (SiO2)

Chert (Chalcedony/Agate) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Chert (Chalky/Gray Variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chalky/Gray Variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Black Flint)

Silicon Dioxide (SiO2)

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

Chert (specifically Red Chert/Jasper variety)

Silicon Dioxide (SiO2)

Chert (Iron-stained) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Tumbled amber (likely) (Amber; fossilized plant resin, commonly succinite (organic material rather than a mineral)) — gemstone

Tumbled amber (likely)

Amber; fossilized plant resin, commonly succinite (organic material rather than a mineral)

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

Chert (Pink variety)

Microcrystalline Quartz (SiO2)

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

Chert (Nodule)

Silicon Dioxide (SiO2)

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)

Petrified Wood (Silicified wood (Quartz replacement, SiO2)) — fossil

Petrified Wood

Silicified wood (Quartz replacement, SiO2)

Limestone (specifically Bituminous or Carbonaceous Limestone) (Calcium Carbonate (CaCO3) with Organic Impurities) — sedimentary

Limestone (specifically Bituminous or Carbonaceous Limestone)

Calcium Carbonate (CaCO3) with Organic Impurities

Chert (Agatized/Chalcedony variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Agatized/Chalcedony variety)

Microcrystalline Quartz (SiO2)

Amber (Copal) (Succinate (Fossilized Tree Resin)) — mineraloid

Amber (Copal)

Succinate (Fossilized Tree Resin)