Rock Identifier

Category

Gemstone

Browse gemstone specimens identified by the Rock Identifier community.

Learn about Gemstone in the encyclopedia

Achroite

Alexandrite

Almandine Garnet

Almandine Garnet

Amber

Andamooka Opal

Andesine

Andesine-Labradorite

Andesine-Labradorite

Andradite Garnet

Andradite Garnet

Ant Hill Garnet

Ant Hill Garnet

Aquamarine

Australian Opal

Australian Opal

Aventurine Feldspar

Aventurine Feldspar

Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — mineral

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Pink Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Pink Opal

Hydrated amorphous silica (SiO2·nH2O)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Aventurine

Quartz with fuchsite inclusions (SiO2)

Kyanite (Kyanite (Al2SiO5)) — mineral

Kyanite

Kyanite (Al2SiO5)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (Quartz variety), SiO2) — mineral

Citrine

Silicon Dioxide (Quartz variety), SiO2

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

Chevron Amethyst

Quartz (Silicon Dioxide, SiO2)

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

Green Aventurine

Quartz (SiO2) with fuchsite inclusions

Sodalite (Na8Al6Si6O24Cl2) — mineral

Sodalite

Na8Al6Si6O24Cl2

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Opal

Hydrated amorphous silica (SiO2·nH2O)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz with Tourmaline (Silicon Dioxide with Complex Boron Silicate (SiO2 + Na(Fe3Al6)(Al5Si6O18)(BO3)3(OH)4)) — mineral

Quartz with Tourmaline

Silicon Dioxide with Complex Boron Silicate (SiO2 + Na(Fe3Al6)(Al5Si6O18)(BO3)3(OH)4)

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

Green Aventurine

Quartz with fuchsite inclusions (SiO2)

Likely garnet crystal (rough fragment) (Garnet group; possibly almandine, Fe₃Al₂(SiO₄)₃) — mineral

Likely garnet crystal (rough fragment)

Garnet group; possibly almandine, Fe₃Al₂(SiO₄)₃

Polished tiger’s-eye cabochon (Tiger’s-eye (quartz, SiO₂, with fibrous crocidolite-derived inclusions)) — metamorphic

Polished tiger’s-eye cabochon

Tiger’s-eye (quartz, SiO₂, with fibrous crocidolite-derived inclusions)

Likely garnet, possibly almandine (Garnet group; likely almandine, Fe₃Al₂(SiO₄)₃) — mineral

Likely garnet, possibly almandine

Garnet group; likely almandine, Fe₃Al₂(SiO₄)₃

Clear quartz fragment (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz fragment

Quartz (silicon dioxide, SiO₂)

Chrysocolla (Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Tektite (Indochinite) (Tektite (Natural silica glass)) — meteorite

Tektite (Indochinite)

Tektite (Natural silica glass)

Red Tiger's Eye (Silicon Dioxide (SiO2) with hematite inclusions) — metamorphic

Red Tiger's Eye

Silicon Dioxide (SiO2) with hematite inclusions

Dendritic Agate (Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions) — sedimentary

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions

Agate (Silicon dioxide (SiO2)) — mineral

Agate

Silicon dioxide (SiO2)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Amethyst (Pale/Raw Crystal) (Silicon dioxide with iron impurities (SiO2)) — mineral

Amethyst (Pale/Raw Crystal)

Silicon dioxide with iron impurities (SiO2)

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

Quartz with Inclusions

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Jadeite (Jadeite (NaAlSi2O6)) — mineral

Jadeite

Jadeite (NaAlSi2O6)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Jasper and Quartz Pebble (Silicon dioxide (SiO2) microcrystalline quartz variety) — sedimentary

Jasper and Quartz Pebble

Silicon dioxide (SiO2) microcrystalline quartz variety

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Smoky Quartz with inclusions) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky Quartz with inclusions)

Silicon Dioxide (SiO2)