Rock Identifier

Category

Not A Natural Rock

Browse not a natural rock specimens identified by the Rock Identifier community.

Learn about Not A Natural Rock in the encyclopedia

Asphalt Rock

Rock Gypsum

Coral Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Chalk

Obsidian

Baddeleyite

Cataclasite

Anorthosite

Kimberlite

Dyed Pink Agate (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Dyed Pink Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Red Granite (Phaneritic Felsic Igneous Rock) — igneous

Red Granite

Phaneritic Felsic Igneous Rock

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Pink Granite (Granite (Phaneritic intrusive rock)) — igneous

Pink Granite

Granite (Phaneritic intrusive rock)

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Pink Granite (Granite (Phaneritic igneous rock)) — igneous

Pink Granite

Granite (Phaneritic igneous rock)

Moss-covered Limestone with Quartz/Calcite Pocket (Calcium Carbonate (CaCO3) rock with biological moss coating) — sedimentary

Moss-covered Limestone with Quartz/Calcite Pocket

Calcium Carbonate (CaCO3) rock with biological moss coating

Agate (Polished Nodule) (Agate (Silicon Dioxide, SiO2)) — mineral

Agate (Polished Nodule)

Agate (Silicon Dioxide, SiO2)

Sedimentary Sandstone with Iron Oxide (Ferruginous Sandstone) — sedimentary

Sedimentary Sandstone with Iron Oxide

Ferruginous Sandstone

Dyed Pumice (Vesicular Rhyolite (Artificial Coloration Addition)) — igneous

Dyed Pumice

Vesicular Rhyolite (Artificial Coloration Addition)

Granite (Phaneritic plutonic rock (Quartz, Feldspar, Mica)) — igneous

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Conglomerate (Sedimentary Conglomerate with Basaltic Clast) — sedimentary

Conglomerate

Sedimentary Conglomerate with Basaltic Clast

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Sandstone (Arenite (primarily SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Ironstone Concretion (Ironstone (Siderite/Goethite/Hematite matrix)) — sedimentary

Ironstone Concretion

Ironstone (Siderite/Goethite/Hematite matrix)

Granite (Plutonic Granite) — igneous

Granite

Plutonic Granite

Tumbled turquoise-like stone (Likely turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O) — mineral

Tumbled turquoise-like stone

Likely turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Beach Pebbles and Jasper (Quartz / Microcrystalline Silicon Dioxide (SiO2)) — sedimentary

Beach Pebbles and Jasper

Quartz / Microcrystalline Silicon Dioxide (SiO2)

Sandstone (Ferruginous) (Arenite with Iron Oxide (Fe2O3) cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide (Fe2O3) cement

Quartz-bearing granite or gneiss fragment (Granite/gneiss composed mainly of quartz (SiO₂), feldspar, and minor mica or ferromagnesian minerals) — igneous

Quartz-bearing granite or gneiss fragment

Granite/gneiss composed mainly of quartz (SiO₂), feldspar, and minor mica or ferromagnesian minerals

Amethyst (Silicon Dioxide (SiO2)) — gemstone

Amethyst

Silicon Dioxide (SiO2)

Granite (Granite (Felsic Plutonic Rock)) — Igneous

Granite

Granite (Felsic Plutonic Rock)

Basalt Pebble (Beach Stone) (Aphanitic Mafic Igneous Rock) — igneous

Basalt Pebble (Beach Stone)

Aphanitic Mafic Igneous Rock

Granite (Granite (Felsic Plutonic Rock)) — Igneous

Granite

Granite (Felsic Plutonic Rock)

Red Sandstone (Arenite (Iron-rich)) — sedimentary

Red Sandstone

Arenite (Iron-rich)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Pumice (Pumice (a highly vesicular extrusive igneous rock)) — igneous

Pumice

Pumice (a highly vesicular extrusive igneous rock)

White quartz pebble (likely milky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

White quartz pebble (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Pink Granite (Granite (enriched in Potassium Feldspar / Orthoclase)) — igneous

Pink Granite

Granite (enriched in Potassium Feldspar / Orthoclase)

Quartz Sandstone (Quartz Arenite) — sedimentary

Quartz Sandstone

Quartz Arenite

Sandstone (with Iron Oxidation) (Arenite (SiO2 with Fe-oxides)) — sedimentary

Sandstone (with Iron Oxidation)

Arenite (SiO2 with Fe-oxides)

Aquamarine (Beryllium Aluminum Silicate (Be3Al2Si6O18)) — gemstone

Aquamarine

Beryllium Aluminum Silicate (Be3Al2Si6O18)

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Picture Jasper (Silicon Dioxide (SiO2)) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Blue Dyed Agate Geode (Chalcedony (cryptocrystalline Quartz), SiO2) — mineral

Blue Dyed Agate Geode

Chalcedony (cryptocrystalline Quartz), SiO2

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite River Stone (Phaneritic Felsic Igneous Rock) — igneous

Granite River Stone

Phaneritic Felsic Igneous Rock

Granite (Leucogranite) (Felsic Plutonic Rock (Granite)) — igneous

Granite (Leucogranite)

Felsic Plutonic Rock (Granite)

Pink Granite (Granite (Felsic Plutonic Rock)) — igneous

Pink Granite

Granite (Felsic Plutonic Rock)