Rock Identifier

Category

Organic Gemstone (Not A Mineral)

Browse organic gemstone (not a mineral) specimens identified by the Rock Identifier community.

Turquoise and Hematite (Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)) — mineral

Turquoise and Hematite

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)

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

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Garnet in Matrix (likely Almandine in Quartz/Mica Schist) (Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock) — metamorphic

Garnet in Matrix (likely Almandine in Quartz/Mica Schist)

Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock

Quartz on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz on Matrix

Silicon Dioxide (SiO2)

Banded Agate (specifically Lake Superior Agate style) (Agate (Cryptocrystalline Quartz), SiO2) — mineral

Banded Agate (specifically Lake Superior Agate style)

Agate (Cryptocrystalline Quartz), SiO2

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

Blue Banded Agate (Dyed)

Silicon Dioxide (SiO2) - Chalcedony variety

Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

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

Dyed Pink Agate (Crackled)

Silicon Dioxide (SiO2) - Chalcedony variety

Moonstone (Orthoclase/Albite (KAlSi3O8 / NaAlSi3O8) with Adularescence) — mineral

Moonstone

Orthoclase/Albite (KAlSi3O8 / NaAlSi3O8) with Adularescence

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Red Jasper (Jasper (Silicon Dioxide) - SiO2) — mineral

Red Jasper

Jasper (Silicon Dioxide) - SiO2

Angelite (Anhydrite (Calcium Sulfate, CaSO4)) — mineral

Angelite

Anhydrite (Calcium Sulfate, CaSO4)

Green Moonstone (Garnierite) (Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)) — mineral

Green Moonstone (Garnierite)

Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)

Almandine Garnet in Schist (Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist) — metamorphic

Almandine Garnet in Schist

Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist

Aquamarine (Beryllium Aluminum Silicate (Be3Al2Si6O18)) — mineral

Aquamarine

Beryllium Aluminum Silicate (Be3Al2Si6O18)

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

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2) with hematite/limonite inclusions) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with hematite/limonite inclusions

Ruby (Pink to Red Corundum) (Al2O3 (Corundum with Chromium impurities)) — mineral

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

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

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline

Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4

Blue Topaz (specifically London Blue shade) (Topaz - Al2SiO4(F,OH)2) — mineral

Blue Topaz (specifically London Blue shade)

Topaz - Al2SiO4(F,OH)2

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Yellow Agate (Chalcedony (cryptocrystalline silica), SiO2) — mineral

Yellow Agate

Chalcedony (cryptocrystalline silica), SiO2

Blue Star Sapphire (Corundum (Al2O3)) — mineral

Blue Star Sapphire

Corundum (Al2O3)

Labradorite (Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8) — mineral

Labradorite

Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8

Carnelian (Carnelian Chalcedony (SiO2 with iron oxide impurities)) — mineral

Carnelian

Carnelian Chalcedony (SiO2 with iron oxide impurities)

Turquoise (Hydrous phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral

Turquoise

Hydrous phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Labradorite ((Ca, Na)(Al, Si)4O8 (Calcium Sodium Aluminum Silicate)) — mineral

Labradorite

(Ca, Na)(Al, Si)4O8 (Calcium Sodium Aluminum Silicate)

Labradorite (Labradorite ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

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

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

White Topaz (Al2SiO4(F,OH)2 (Aluminium Silicate Fluoride Hydroxide)) — mineral

White Topaz

Al2SiO4(F,OH)2 (Aluminium Silicate Fluoride Hydroxide)

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

Smoky Quartz

SiO2 (Silicon Dioxide with aluminum impurities)

Carnelian (Chalcedony (Silicon Dioxide / SiO2)) — mineral

Carnelian

Chalcedony (Silicon Dioxide / SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Sodalite (Sodalite [Na8(Al6Si6O24)Cl2]) — mineral

Sodalite

Sodalite [Na8(Al6Si6O24)Cl2]

Orthoclase Feldspar (Potassium aluminum silicate (KAlSi3O8)) — mineral

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

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

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)