Rock Identifier

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All rocks & minerals

Every specimen the Rock Identifier community has discovered, from desert agates to deep-sea basalts.

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Acanthite

Acanthite

Achroite

Achroite

Adinole

Adinole

Adirondack Garnet

Adirondack Garnet

Adularia

Adularia

Agate

Agate

Albite

Albite

Albitite

Albitite

Alexandrite

Alexandrite

Alkali Feldspar

Alkali Feldspar

Almandine Garnet

Almandine Garnet

Alnöite

Alnöite

Shiva Eye Shell Fossil (Operculum) (Turbo marmoratus (Operculum)) — fossil

Shiva Eye Shell Fossil (Operculum)

Turbo marmoratus (Operculum)

fossil
Yellow Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Yellow Agate

Silicon Dioxide (Chalcedony variety), SiO2

gemstone
Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

sedimentary
Botryoidal Chalcedony / Quartz (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony / Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

mineral
Tumbled Ruby (Corundum (Al2O3)) — gemstone

Tumbled Ruby

Corundum (Al2O3)

gemstone
Tiger's Eye (Silicon Dioxide (Quartz pseudomorph after crocidolite)) — gemstone

Tiger's Eye

Silicon Dioxide (Quartz pseudomorph after crocidolite)

gemstone
Polychrome Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Polychrome Jasper

Microcrystalline Quartz (SiO2)

sedimentary
Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

igneous
Amethyst (Quartz (Silicon Dioxide, SiO2)) — gemstone

Amethyst

Quartz (Silicon Dioxide, SiO2)

gemstone
Obsidian Arrowhead (Volcanic Glass (Amorphous Silicon Dioxide)) — igneous

Obsidian Arrowhead

Volcanic Glass (Amorphous Silicon Dioxide)

igneous
Quartzite (Metamorphic Quartz Sandstone) — metamorphic

Quartzite

Metamorphic Quartz Sandstone

metamorphic
Lapis Lazuli (Complex silicate rock containing lazurite, calcite, and pyrite) — mineral

Lapis Lazuli

Complex silicate rock containing lazurite, calcite, and pyrite

mineral
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Amethyst (Quartz (Silicon Dioxide, SiO2)) — mineral

Amethyst

Quartz (Silicon Dioxide, SiO2)

mineral
Schist (Metamorphic Rock (Schist)) — metamorphic

Schist

Metamorphic Rock (Schist)

metamorphic
Green Aventurine (Quartz with fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Quartz with fuchsite inclusions (SiO2)

mineral
K2 Stone (Azurite in Granite) — igneous

K2 Stone

Azurite in Granite

igneous
White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

mineral
Larvikite (Monzonite / Anorthosite (Igneous Rock)) — igneous

Larvikite

Monzonite / Anorthosite (Igneous Rock)

igneous
K2 Stone (Azurite in Granite) — igneous

K2 Stone

Azurite in Granite

igneous
Poppy Jasper (Microcrystalline Quartz (SiO2) with mineral inclusions) — sedimentary

Poppy Jasper

Microcrystalline Quartz (SiO2) with mineral inclusions

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

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

sedimentary
Green Aventurine (Quartz (SiO2) with fuchsite inclusions) — mineral

Green Aventurine

Quartz (SiO2) with fuchsite inclusions

mineral
Tumbled Amethyst (Silicon Dioxide (Quartz variety)) — gemstone

Tumbled Amethyst

Silicon Dioxide (Quartz variety)

gemstone
Yellow Calcite (Calcium Carbonate, CaCO3) — mineral

Yellow Calcite

Calcium Carbonate, CaCO3

mineral
Green Aventurine (Quartz (SiO2) with fuchsite inclusions) — mineral

Green Aventurine

Quartz (SiO2) with fuchsite inclusions

mineral
Green Aventurine (Quartz with Fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Quartz with Fuchsite inclusions (SiO2)

mineral
Amazonite (Microcline feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline feldspar (KAlSi3O8)

mineral
Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

igneous
Sandstone Concretion (Sedimentary Concretion (Quartz sand bound by mineral cement)) — sedimentary

Sandstone Concretion

Sedimentary Concretion (Quartz sand bound by mineral cement)

sedimentary
Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Flint / Chert (Microcrystalline quartz (SiO2)) — sedimentary

Flint / Chert

Microcrystalline quartz (SiO2)

sedimentary
Green Aventurine (Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions) — mineral

Green Aventurine

Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions

mineral
Tumbled Grey Agate (Silicon dioxide (Chalcedony variety), SiO2) — gemstone

Tumbled Grey Agate

Silicon dioxide (Chalcedony variety), SiO2

gemstone
Agate Geode (Silicon Dioxide (Chalcedony / Quartz), SiO2) — sedimentary

Agate Geode

Silicon Dioxide (Chalcedony / Quartz), SiO2

sedimentary
Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Black Tourmaline (Schorl (NaFe3Al6(Si6O18)(BO3)3(OH,F)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(Si6O18)(BO3)3(OH,F)4)

mineral
Lapis Lazuli (Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)

metamorphic
White Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — gemstone

White Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

gemstone
Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

mineral