Rock Identifier

Category

Mineral (Gemstone)

Browse mineral (gemstone) specimens identified by the Rock Identifier community.

Onyx (Black Onyx) (Onyx (Silicon Dioxide, SiO2)) — mineral

Onyx (Black Onyx)

Onyx (Silicon Dioxide, SiO2)

mineral
Pink Garnet (likely Almandine or Rhodolite) (Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)) — mineral

Pink Garnet (likely Almandine or Rhodolite)

Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)

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

Amethyst

Amethyst (Silicon Dioxide, SiO2)

mineral
Kyanite (Kyanite (Al2SiO5)) — mineral

Kyanite

Kyanite (Al2SiO5)

mineral
Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

mineral
Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

mineral
Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

mineral
Amazonite (Potassium Feldspar (Microcline) - K(AlSi3O8)) — mineral

Amazonite

Potassium Feldspar (Microcline) - K(AlSi3O8)

mineral
Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

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

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Vein Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

mineral
Lake Superior Agate (Banded Chalcedony (Silicon Dioxide / SiO2)) — mineral

Lake Superior Agate

Banded Chalcedony (Silicon Dioxide / SiO2)

mineral
Yellow Quartz (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

mineral
Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Sugilite (Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)) — mineral

Sugilite

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)

mineral
Orange Calcite (Mexican Onyx) (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

mineral
Moss Agate (Chalcedony (SiO2) with inclusions of manganese or iron oxide) — mineral

Moss Agate

Chalcedony (SiO2) with inclusions of manganese or iron oxide

mineral
Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

mineral
Amazonite (K(AlSi3O8) - Microcline (Var. Amazonite)) — mineral

Amazonite

K(AlSi3O8) - Microcline (Var. Amazonite)

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

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

mineral
Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Yellow Quartz (Chalcedony/Citrine Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Chalcedony/Citrine Pebble)

Silicon Dioxide (SiO2)

mineral
Amazonite (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

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

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

mineral
Quartz (Smoky/Grey variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

mineral
Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

mineral
Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

mineral
Sunstone (Feldspar variety) (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — mineral

Sunstone (Feldspar variety)

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

mineral
Milky Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral
Sodalite (Sodalite, Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

mineral
Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

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

Amethyst

Amethyst (Silicon Dioxide, SiO2)

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

Banded Agate

Silicon Dioxide (SiO2)

mineral
Emerald (Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium

mineral
Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

mineral
Diamond (Cluster Ring) (Carbon (C)) — mineral

Diamond (Cluster Ring)

Carbon (C)

mineral
Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

mineral