Rock Identifier

Community gallery

All rocks & minerals

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

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Pumice (Pumice (a highly vesicular amorphous silicate)) — igneous

Pumice

Pumice (a highly vesicular amorphous silicate)

Pumice (Pumice (Felsic volcanic rock)) — igneous

Pumice

Pumice (Felsic volcanic rock)

Granite (Phaneritic plutonic igneous rock (SiO2 rich)) — igneous

Granite

Phaneritic plutonic igneous rock (SiO2 rich)

Rose Quartz (Silicon dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese) — mineral

Rose Quartz

Silicon dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese

Dalmatian Stone (Dalmatian Stone (formerly called Dalmatian Jasper)) — igneous

Dalmatian Stone

Dalmatian Stone (formerly called Dalmatian Jasper)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Red Jasper (Silicon Dioxide with Hematite (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Hematite (SiO2 + Fe2O3)

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

Yellow Jasper

Silicon Dioxide with Limonite/Goethite inclusions (SiO2)

Vesicular Basalt (Scoria) (Basalt with vesicular texture) — igneous

Vesicular Basalt (Scoria)

Basalt with vesicular texture

Greenstone (Metabasalt / Metamorphosed Igneous Rock) — metamorphic

Greenstone

Metabasalt / Metamorphosed Igneous Rock

Basalt (Basalt (containing plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (containing plagioclase, pyroxene, and olivine)

Quartzite Pebbles (Crystalline silica rock (SiO2)) — metamorphic

Quartzite Pebbles

Crystalline silica rock (SiO2)

Granite Pebble (Granite (Phaneritic Igneous Rock)) — igneous

Granite Pebble

Granite (Phaneritic Igneous Rock)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Red Scoria (Lava Rock) (Scoria (highly vesicular basaltic/andesitic rock)) — igneous

Red Scoria (Lava Rock)

Scoria (highly vesicular basaltic/andesitic rock)

Native Copper in Basalt (Cu-element in Mafic Volcanic Rock (Basalt)) — igneous

Native Copper in Basalt

Cu-element in Mafic Volcanic Rock (Basalt)

Quartz with Chalcopyrite (Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)) — mineral

Quartz with Chalcopyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Carnelian Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Basalt (Basalt (Aphanitic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Igneous Rock)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Rose Quartz (SiO2 (Silicon Dioxide)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide)

Banded Agate (specifically Carnelian Agate) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (specifically Carnelian Agate)

Silicon Dioxide (SiO2)

Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

Corundum (Sapphire) (Corundum (Al2O3)) — mineral

Corundum (Sapphire)

Corundum (Al2O3)

Rough Blue Diamond (Carbon (C) - Type IIb Diamond) — mineral

Rough Blue Diamond

Carbon (C) - Type IIb Diamond

Brecciated Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Brecciated Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Porphyry (Porphyritic Igneous Rock) — igneous

Porphyry

Porphyritic Igneous Rock

Botryoidal Quartz (Silicon Dioxide (SiO2)) — mineral

Botryoidal Quartz

Silicon Dioxide (SiO2)

Garnet in Quartz Matrix (Almandine Garnet (Fe3Al2(SiO4)3) in Quartz (SiO2)) — metamorphic

Garnet in Quartz Matrix

Almandine Garnet (Fe3Al2(SiO4)3) in Quartz (SiO2)

Lapis Lazuli (Carved) (Lazurite-rich metamorphic rock (approx. (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)) — metamorphic

Lapis Lazuli (Carved)

Lazurite-rich metamorphic rock (approx. (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Fire Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Fire Opal

Hydrated Silica (SiO2·nH2O)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite treated with acid) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite treated with acid

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

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Pink Granite (Phaneritic Felsic Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock

Smoky Quartz (Silicon dioxide (SiO2)) — Mineral

Smoky Quartz

Silicon dioxide (SiO2)

Sandstone (Red Sandstone) (Arenite (predominantly SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Red Sandstone)

Arenite (predominantly SiO2 with Fe2O3 cement)

Iron-Stained Quartzite (Quartzite (chemically SiO2 with Fe2O3/FeO(OH) staining)) — metamorphic

Iron-Stained Quartzite

Quartzite (chemically SiO2 with Fe2O3/FeO(OH) staining)