Rock Identifier

Community gallery

All rocks & minerals

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

Nephrite Jade (Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)

Black Onyx (Chalcedony (SiO2 with inclusions)) — mineral

Black Onyx

Chalcedony (SiO2 with inclusions)

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Banded Quartzite (Quartzite (primarily SiO2)) — metamorphic

Banded Quartzite

Quartzite (primarily SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Jasper Conglomerate (Jasper-clast Conglomerate (SiO2)) — sedimentary

Jasper Conglomerate

Jasper-clast Conglomerate (SiO2)

Basalt (Mafic volcanic rock (dominated by Plagioclase and Pyroxene)) — igneous

Basalt

Mafic volcanic rock (dominated by Plagioclase and Pyroxene)

Pink Granite (Granite (Alkali Feldspar Granite)) — igneous

Pink Granite

Granite (Alkali Feldspar Granite)

Chert (River Pebble) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (River Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Iron-stained Quartz (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)) — mineral

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Quartz Vein in Sandstone (Hydrothermal Quartz (SiO2) in Arenite) — sedimentary

Quartz Vein in Sandstone

Hydrothermal Quartz (SiO2) in Arenite

Rose Quartz (Rose Quartz (SiO2 with trace titanium, iron, or manganese)) — mineral

Rose Quartz

Rose Quartz (SiO2 with trace titanium, iron, or manganese)

Iron-stained Quartz (Silicon Dioxide (SiO2) with Limonite/Hematite inclusions) — mineral

Iron-stained Quartz

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

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

Quartz (Milky/Rose variety)

Silicon Dioxide (SiO2)

Chert (Microcrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert

Microcrystalline Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Agate (Chert/Chalcedony) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Agate (Chert/Chalcedony)

Cryptocrystalline Quartz (SiO2)

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

Amethyst

SiO2 (Silicon Dioxide with iron impurities)

Gneiss (Metamorphic Gneiss (High-grade regional metamorphism)) — metamorphic

Gneiss

Metamorphic Gneiss (High-grade regional metamorphism)

Granite (Phaneritic Plutonic Felsic Rock (SiO2 > 69%)) — igneous

Granite

Phaneritic Plutonic Felsic Rock (SiO2 > 69%)

Gray Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Gray Agate

Cryptocrystalline Quartz (SiO2)

Banded Chert (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert

Silicon Dioxide (SiO2)

Chert (Yellow Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

Chert (often called Jasper or River Siltstone) (Chert (SiO2)) — sedimentary

Chert (often called Jasper or River Siltstone)

Chert (SiO2)

Shiva Lingam (Cryptocrystalline Quartz (Jasperiod) with Iron Oxide (Fe2O3)) — metamorphic

Shiva Lingam

Cryptocrystalline Quartz (Jasperiod) with Iron Oxide (Fe2O3)

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

Chert (Jasper)

Silicon Dioxide (SiO2)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with goethite/iron oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with goethite/iron oxide inclusions

Tiger's Eye (Silicified Riebeckite Asbestos (SiO2 with Iron Oxide inclusions)) — mineral

Tiger's Eye

Silicified Riebeckite Asbestos (SiO2 with Iron Oxide inclusions)

Black Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Black Obsidian

Volcanic Glass (predominantly SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Citrine Quartz (Crystalline Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Crystalline Silicon Dioxide (SiO2) with iron impurities

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Wavellite (Wavellite (Al3(PO4)2(OH, F)3·5H2O)) — mineral

Wavellite

Wavellite (Al3(PO4)2(OH, F)3·5H2O)

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Quartz (Milky or Yellow variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Yellow variety)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)