Rock Identifier

Category

Mineral And Organic Gemstone

Browse mineral and organic gemstone specimens identified by the Rock Identifier community.

Learn about Mineral And Organic Gemstone in the encyclopedia

Black Shale

Jet

Malachite

Bumblebee Jasper

Bumblebee Jasper

Andesine

Aragonite

Dolomite

Albite

Pyrrhotite

Andesite

Andalusite

Andamooka Opal

Red Coral (Precious Coral) (Corallium rubrum (Calcium Carbonate, CaCO3)) — gemstone

Red Coral (Precious Coral)

Corallium rubrum (Calcium Carbonate, CaCO3)

Shale or Argillite (Shale (sedimentary) / Argillite (metamorphic)) — Sedimentary or Metamorphic (low-grade)

Shale or Argillite

Shale (sedimentary) / Argillite (metamorphic)

Sedimentary or Metamorphic (low-grade)

Amber (Succinate (Organic Fossilized Resin)) — mineraloid

Amber

Succinate (Organic Fossilized Resin)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Amber (Succinicum (Formula: C10H16O)) — Mineraloid

Amber

Succinicum (Formula: C10H16O)

Amber (Fossilized Tree Resin) — gemstone

Amber

Fossilized Tree Resin

Amber (Succinite (specifically for Baltic Amber), Formula: C10H16O) — Organic Gemstone (often associated with Sedimentary sequences)

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Organic Gemstone (often associated with Sedimentary sequences)

Fossiliferous Limestone (Carbonate Rock (CaCO3 with organic inclusions)) — sedimentary

Fossiliferous Limestone

Carbonate Rock (CaCO3 with organic inclusions)

Amber (Succinite (C10H16O)) — gemstone

Amber

Succinite (C10H16O)

Amber (Succinite (Fossilized Tree Resin)) — mineraloid

Amber

Succinite (Fossilized Tree Resin)

Fossil Coral (Phylum Cnidaria / Rugosa or Tabulata) — fossil

Fossil Coral

Phylum Cnidaria / Rugosa or Tabulata

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Yellow Jasper (Mookaite style) (Silicon Dioxide (SiO2) with Goethite/Hematite inclusions) — sedimentary

Yellow Jasper (Mookaite style)

Silicon Dioxide (SiO2) with Goethite/Hematite inclusions

Tahitian black pearl strand (Cultured pearl; aragonite (CaCO₃) nacre) — gemstone

Tahitian black pearl strand

Cultured pearl; aragonite (CaCO₃) nacre

Chert Nodule (Microcrystalline Silica (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Silica (SiO2)

Fossil Shark Tooth (Chondrichthyes (Class)) — fossil

Fossil Shark Tooth

Chondrichthyes (Class)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Amber (Copal) (Organic gemstone, fossilized tree resin (often immature amber or copal)) — Mineral

Amber (Copal)

Organic gemstone, fossilized tree resin (often immature amber or copal)

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

Petrified Wood

Silicified wood (Quartz replacement, SiO2)

Natural Pearl (appearing in a jewelry setting) (Calcium Carbonate (mostly Aragonite), CaCO3 with Conchiolin) — mineral

Natural Pearl (appearing in a jewelry setting)

Calcium Carbonate (mostly Aragonite), CaCO3 with Conchiolin

Fossiliferous Limestone (Fossiliferous Calcite (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Calcite (CaCO3)

Fossiliferous Limestone (Fossiliferous Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3)

Shungite (Shungite (Non-crystalline carbon, C)) — mineral

Shungite

Shungite (Non-crystalline carbon, C)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Calligraphy Stone (Fossiliferous Limestone (containing Hematite and Shells)) — sedimentary

Calligraphy Stone

Fossiliferous Limestone (containing Hematite and Shells)

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

Chert (Flint Nodules)

Silicon Dioxide (SiO2)

Chert Nodule (Fossiliferous Chert) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodule (Fossiliferous Chert)

Microcrystalline Quartz (SiO2)

Jasper (Microcrystalline quartz (SiO2)) — sedimentary

Jasper

Microcrystalline quartz (SiO2)

Amber (Succinite) — Organic Gemstone (sedimentary associations)

Amber

Succinite

Organic Gemstone (sedimentary associations)

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)

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

Chert

Chert (Microcrystalline Quartz, SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Amber (Succinited (C10H16O)) — fossil

Amber

Succinited (C10H16O)

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

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood (Silicified Paleoxylon (SiO2)) — fossil

Petrified Wood

Silicified Paleoxylon (SiO2)

Limestone with Fossil inclusions (Fossiliferous Limestone (CaCO3)) — sedimentary

Limestone with Fossil inclusions

Fossiliferous Limestone (CaCO3)

Red Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Red Chert (Jasper)

Silicon Dioxide (SiO2)

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

Chert / Chalcedony

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Bamboo Leaf Jasper (Silicified Siltstone or Jasper (SiO2)) — sedimentary

Bamboo Leaf Jasper

Silicified Siltstone or Jasper (SiO2)

Amber (Succinite (C10H16O)) — Mineraloid (Organic)

Amber

Succinite (C10H16O)

Mineraloid (Organic)