Rock Identifier

Category

Mineral (Specifically A Gemstone Variety)

Browse mineral (specifically a gemstone variety) specimens identified by the Rock Identifier community.

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

Chert (Flint variety)

Silicon Dioxide (SiO2)

Porphyry (Flower Stone) (Porphyry (Andesite or Basalt matrix)) — igneous

Porphyry (Flower Stone)

Porphyry (Andesite or Basalt matrix)

Calcite (Yellow/Orange variety - sometimes called Honey Calcite) (Calcite) — Mineral

Calcite (Yellow/Orange variety - sometimes called Honey Calcite)

Calcite

Tektite (likely Australite) (Tektite (no specific chemical formula as it's a natural glass of variable composition, mostly SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O, TiO2)) — Mineral (specifically a mineraloid)

Tektite (likely Australite)

Tektite (no specific chemical formula as it's a natural glass of variable composition, mostly SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O, TiO2)

Mineral (specifically a mineraloid)

Quartz (likely a form of massive or vein quartz) (Quartz (SiO₂)) — Mineral

Quartz (likely a form of massive or vein quartz)

Quartz (SiO₂)

Pink Granite (Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)

Yellow Chert (Jasper) (Chalcedony (SiO2) with iron oxide inclusions) — sedimentary

Yellow Chert (Jasper)

Chalcedony (SiO2) with iron oxide inclusions

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Pink Granite (Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

White Quartz (Quartz (SiO2)) — Mineral

White Quartz

Quartz (SiO2)

Quartz (Milky/Clear variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Chalcedony (Agate/Chert variety) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

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

Jasper (Banded Jasper)

Silicon Dioxide (SiO2) with impurities

Septarian Nodule (Septarian Dragon Stone) (Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)) — sedimentary

Septarian Nodule (Septarian Dragon Stone)

Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)

Smoky Quartz (Quartz (SiO₂)) — Mineral

Smoky Quartz

Quartz (SiO₂)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Raw Rose and Milky varieties) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw Rose and Milky varieties)

Silicon Dioxide (SiO2)

Gneiss (specifically a Granitic Gneiss) (Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)) — metamorphic

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Breccia (Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)) — sedimentary

Breccia

Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)

Slag Glass (Cullet) (Amorphous Silica (man-made), primarily SiO2 with trace metal oxides) — Mineraloid / Synthetic Glass

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Mineraloid / Synthetic Glass

Basalt with Magnetite (Crystalline Basalt (Primarily Plagioclase and Pyroxene) with Magnetite (Fe3O4)) — igneous

Basalt with Magnetite

Crystalline Basalt (Primarily Plagioclase and Pyroxene) with Magnetite (Fe3O4)

Basalt (River Pebble) (Mafic volcanic rock (primarily Plagioclase feldspar and Pyroxene)) — igneous

Basalt (River Pebble)

Mafic volcanic rock (primarily Plagioclase feldspar and Pyroxene)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Banded Calcite (often commercially sold as Mexican Onyx or Green Onyx) (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (often commercially sold as Mexican Onyx or Green Onyx)

Calcium Carbonate (CaCO3)

Chert / Flint (Chert (varieties include Flint)) — Sedimentary

Chert / Flint

Chert (varieties include Flint)

Labradorite (Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8) — mineral

Labradorite

Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8

Satin Spar (often marketed as Selenite) (Fibrous Gypsum (CaSO4·2H2O)) — mineral

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (CaSO4·2H2O)

Basalt (Basalt (composition: Plagioclase, Pyroxene, and Olivine)) — igneous

Basalt

Basalt (composition: Plagioclase, Pyroxene, and Olivine)

Quartz (milky quartz variety) (Quartz (SiO₂)) — Mineral

Quartz (milky quartz variety)

Quartz (SiO₂)

Jasper (Petrified Wood variant) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Petrified Wood variant)

Silicon Dioxide (SiO2) with iron oxide inclusions

Diamond (Carbon (C), specifically a solid form of the element carbon with atoms arranged in a crystal structure called diamond cubic.) — Mineral

Diamond

Carbon (C), specifically a solid form of the element carbon with atoms arranged in a crystal structure called diamond cubic.

Chalcedony (specifically Agate or Flint) (Silicon Dioxide (SiO₂)) — Mineral

Chalcedony (specifically Agate or Flint)

Silicon Dioxide (SiO₂)

Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate) (Mixed Silicates and Oxides (predominantly SiO2 group minerals)) — mineral

Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)

Mixed Silicates and Oxides (predominantly SiO2 group minerals)

Black Tourmaline (Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)) — Mineral

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)

Labradorite (Labradorite ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Jasper (Banded Argillite/Chert mix) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Banded Argillite/Chert mix)

Silicon Dioxide (SiO2) with iron oxide inclusions

Ruby and Diamond Heart Pendant (Corundum (Al2O3) and Diamond (C)) — mineral

Ruby and Diamond Heart Pendant

Corundum (Al2O3) and Diamond (C)

Jasper (specifically Red Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (specifically Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Granite (specifically Brown Granite Countertop) (Phaneritic Felsic Igneous Rock (Granite-Gabbro series)) — igneous

Granite (specifically Brown Granite Countertop)

Phaneritic Felsic Igneous Rock (Granite-Gabbro series)

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Rose Quartz (Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron

Ocean Jasper (Orbicular Jasper (Silicon Dioxide, SiO2)) — sedimentary

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)