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

Blue Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Blue Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Precious Opal

Hydrated Silica (SiO2·nH2O)

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

Opal

Hydrated amorphous silica (SiO2·nH2O)

Rainbow Lattice Sunstone (Matrix) (Orthoclase Feldspar (containing Hematite and Magnetite)) — mineral

Rainbow Lattice Sunstone (Matrix)

Orthoclase Feldspar (containing Hematite and Magnetite)

Unakite (Unakite (Metasomatized Granite)) — metamorphic

Unakite

Unakite (Metasomatized Granite)

Amber (Succiniferous organic material (Succinite)) — fossil

Amber

Succiniferous organic material (Succinite)

Amber (Succinited (C10H16O)) — fossil

Amber

Succinited (C10H16O)

Turquoise or Chrysocolla (Inlaid Jewelry) (Hydrated copper aluminum phosphate / Hydrated copper phyllosilicate) — mineral

Turquoise or Chrysocolla (Inlaid Jewelry)

Hydrated copper aluminum phosphate / Hydrated copper phyllosilicate

Amber (Succinite (Fossilized Tree Resin)) — mineraloid

Amber

Succinite (Fossilized Tree Resin)

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

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

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

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Pearl (Calcium Carbonate (CaCO3) in the form of Aragonite) — mineral

Pearl

Calcium Carbonate (CaCO3) in the form of Aragonite

Agate (Chalcedony (SiO2)) — Mineral

Agate

Chalcedony (SiO2)

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

Quartz (Citrine/Milky variety)

Silicon Dioxide (SiO2)

Lake Superior Agate (Silicon Dioxide (Cryptocrystalline Quartz), SiO2) — mineral

Lake Superior Agate

Silicon Dioxide (Cryptocrystalline Quartz), SiO2

Quartz (Water-worn Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Water-worn Pebble)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chalcedony (Agate/Carnelian) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Agate/Carnelian)

Cryptocrystalline Quartz (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Quartz fragment (Silicon dioxide (SiO2)) — mineral

Quartz fragment

Silicon dioxide (SiO2)

Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

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

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Tektite (Indochinite) (Tektite (SiO2 + Al2O3, Glassy Melts)) — igneous

Tektite (Indochinite)

Tektite (SiO2 + Al2O3, Glassy Melts)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Turquoise (Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

Rough Topaz (Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)) — mineral

Rough Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

K-Feldspar (Microcline / Orthoclase) (Potassium Feldspar (KAlSi3O8)) — mineral

K-Feldspar (Microcline / Orthoclase)

Potassium Feldspar (KAlSi3O8)

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

Agate (Chalcedony)

Silicon Dioxide (SiO2)

Dalmatian Stone (Dalmatian Jasper) (Peralkaline Aplite (Quartz, Feldspar, and Arfvedsonite composition)) — igneous

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Aplite (Quartz, Feldspar, and Arfvedsonite composition)

Orange Aventurine (or Tumbled Carnelian) (Quartz (SiO2) with inclusions) — mineral

Orange Aventurine (or Tumbled Carnelian)

Quartz (SiO2) with inclusions

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

Quartz (Clear Quartz / Rock Crystal)

Silicon Dioxide (SiO2)

Blue Apatite (Fluorapatite / Apatite group (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Fluorapatite / Apatite group (Ca5(PO4)3(F,Cl,OH))

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

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

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with inclusions

Lapis Lazuli (Lapis Lazuli (Complex rock mainly composed of Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Complex rock mainly composed of Lazurite, Calcite, and Pyrite)