Rock Identifier

Category

Organic Gem Material (Botanical)

Browse organic gem material (botanical) specimens identified by the Rock Identifier community.

Learn about Organic Gem Material (Botanical) in the encyclopedia

Gem Silica

Peat

Sapropel

Jet

Bituminous Shale

Bituminous Shale

Diamond

Pearl

Black Shale

Elbaite

Peridot

Pegmatite

Iolite

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Mammoth Molar Fossil (Mammuthus primigenius (Tooth fragment)) — fossil

Mammoth Molar Fossil

Mammuthus primigenius (Tooth fragment)

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

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

Chert Nodules in Limestone (Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)) — sedimentary

Chert Nodules in Limestone

Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)

Mixed tumbled gemstone collection (Varied minerals, likely including amethyst, sodalite/lapis lazuli, quartzite or aventurine, jasper, and agate/chalcedony) — gemstone

Mixed tumbled gemstone collection

Varied minerals, likely including amethyst, sodalite/lapis lazuli, quartzite or aventurine, jasper, and agate/chalcedony

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Blue chalcedony or blue quartz bead bracelet (Microcrystalline quartz, SiO₂ (chalcedony); possibly treated blue quartz) — gemstone

Blue chalcedony or blue quartz bead bracelet

Microcrystalline quartz, SiO₂ (chalcedony); possibly treated blue quartz

Smoky Quartz (Silicon dioxide (SiO2)) — mineral

Smoky Quartz

Silicon dioxide (SiO2)

Coarse Sand or Fine Gravel (Detrital Sedimentary Fragments (mostly SiO2)) — sedimentary

Coarse Sand or Fine Gravel

Detrital Sedimentary Fragments (mostly SiO2)

Quartz-rich pegmatite with mica (Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and muscovite/biotite mica) — igneous

Quartz-rich pegmatite with mica

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and muscovite/biotite mica

Sandstone (Sandstone (Siliciclastic Sedimentary Rock)) — sedimentary

Sandstone

Sandstone (Siliciclastic Sedimentary Rock)

Fossil bivalve shell (Likely an extinct or modern-like ribbed cockle/scallop; exact genus requires locality and diagnostic hinge features) — fossil

Fossil bivalve shell

Likely an extinct or modern-like ribbed cockle/scallop; exact genus requires locality and diagnostic hinge features

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — mineral

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Jasper (Silicon dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon dioxide (Microcrystalline Quartz, SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Tumbled Red Jasper (Quartz (Microcrystalline variety of chalcedony, SiO2)) — mineral

Tumbled Red Jasper

Quartz (Microcrystalline variety of chalcedony, SiO2)

Fossil Shark Tooth (Selachii fossil) — fossil

Fossil Shark Tooth

Selachii fossil

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

Mammoth Tooth (Mammuthus tooth) — fossil

Mammoth Tooth

Mammuthus tooth

Jasper (Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Fossilized Tooth (Vertebrate Fossilized Tooth (Mineralized Biogenic Material)) — fossil

Fossilized Tooth

Vertebrate Fossilized Tooth (Mineralized Biogenic Material)

Poppy Jasper (Microcrystalline Quartz (SiO2) with hematite and other inclusions) — sedimentary

Poppy Jasper

Microcrystalline Quartz (SiO2) with hematite and other inclusions

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Sandstone (Arenite (SiO2 composed primarily of quartz)) — sedimentary

Sandstone

Arenite (SiO2 composed primarily of quartz)

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

Chert / Flint

Silicon dioxide (SiO2)

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

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Chert (Silicon dioxide (SiO2)) — Sedimentary

Chert

Silicon dioxide (SiO2)

Blue kyanite crystal (Kyanite, Al₂SiO₅) — mineral

Blue kyanite crystal

Kyanite, Al₂SiO₅

Yellow chalcedony (likely heat-treated or resin-coated) (Microcrystalline quartz, SiO₂) — mineral

Yellow chalcedony (likely heat-treated or resin-coated)

Microcrystalline quartz, SiO₂

Chert Nodule in Limestone (Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)) — sedimentary

Chert Nodule in Limestone

Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)

Quartz-veined Limestone (Sedimentary limestone with quartz/calcite veinlets) — sedimentary

Quartz-veined Limestone

Sedimentary limestone with quartz/calcite veinlets

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

Chert (Flint)

Silicon dioxide (SiO2)

Flint (chert), likely brown flint (Microcrystalline quartz/chalcedony (SiO₂)) — sedimentary

Flint (chert), likely brown flint

Microcrystalline quartz/chalcedony (SiO₂)

Amber (Succinite (fossilized resin)) — mineral

Amber

Succinite (fossilized resin)

Rhodonite (Rhodonite (MnSiO3)) — mineral

Rhodonite

Rhodonite (MnSiO3)

Amethyst cabochon ring (Amethyst, purple quartz (SiO₂), colored primarily by iron-related defects and irradiation) — gemstone

Amethyst cabochon ring

Amethyst, purple quartz (SiO₂), colored primarily by iron-related defects and irradiation

Small clear crystal, possibly quartz or glass-like gemstone (Uncertain; likely quartz (SiO₂), but the image is insufficient to exclude man-made glass or cubic zirconia) — mineral

Small clear crystal, possibly quartz or glass-like gemstone

Uncertain; likely quartz (SiO₂), but the image is insufficient to exclude man-made glass or cubic zirconia

Yellow Jasper (Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Opalite (Opalescent Glass (SiO2 + coloring agents)) — Mineral (Synthetic/Man-made)

Opalite

Opalescent Glass (SiO2 + coloring agents)

Mineral (Synthetic/Man-made)