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

Copper Composite Turquoise (Purple and Blue) (Composite Hydrous copper aluminum phosphate with bronze/copper matrix binding) — gemstone

Copper Composite Turquoise (Purple and Blue)

Composite Hydrous copper aluminum phosphate with bronze/copper matrix binding

Diamond (C (Native Carbon)) — gemstone

Diamond

C (Native Carbon)

Amber (Succinite (Fossilized Tree Resin)) — gemstone

Amber

Succinite (Fossilized Tree Resin)

Diamond (or Diamond Simulant) (Carbon (C) or Cubic Zirconia (ZrO2)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Diamond (C (Native Carbon)) — gemstone

Diamond

C (Native Carbon)

Agate (Carnelian / Yellow Agate) (Silicon Dioxide (SiO2)) — gemstone

Agate (Carnelian / Yellow Agate)

Silicon Dioxide (SiO2)

Amber (Fossilized Tree Resin (C10H16O)) — gemstone

Amber

Fossilized Tree Resin (C10H16O)

Opal (Hydrated silicon dioxide (SiO2·nH2O)) — gemstone

Opal

Hydrated silicon dioxide (SiO2·nH2O)

Yellow Chalcedony (Yellow Agate) (Silicon Dioxide (SiO2)) — gemstone

Yellow Chalcedony (Yellow Agate)

Silicon Dioxide (SiO2)

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Clear Quartz (Faceted) (SiO2 - Silicon Dioxide) — gemstone

Clear Quartz (Faceted)

SiO2 - Silicon Dioxide

Clear Quartz (Faceted) (Silicon dioxide (SiO2)) — gemstone

Clear Quartz (Faceted)

Silicon dioxide (SiO2)

Diamond (Rough) (Carbon (C)) — gemstone

Diamond (Rough)

Carbon (C)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Carnelian Agate (SiO2 (Silicon Dioxide - Chalcedony variant)) — gemstone

Carnelian Agate

SiO2 (Silicon Dioxide - Chalcedony variant)

Dyed Agate (Cryptocrystalline variety of Silica (SiO2)) — gemstone

Dyed Agate

Cryptocrystalline variety of Silica (SiO2)

Amethyst and Rose Quartz Beads (Crystalline Quartz (SiO2) with trace elements) — gemstone

Amethyst and Rose Quartz Beads

Crystalline Quartz (SiO2) with trace elements

Emerald in Quartz Matrix (Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium) — gemstone

Emerald in Quartz Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Emerald in Matrix (Beryllium Aluminum Silicate (Be3Al2(SiO3)6) with Chromium/Vanadium) — gemstone

Emerald in Matrix

Beryllium Aluminum Silicate (Be3Al2(SiO3)6) with Chromium/Vanadium

Ruby (Faceted) (Corundum (Al2O3:Cr)) — gemstone

Ruby (Faceted)

Corundum (Al2O3:Cr)

Opalite (Man-made Opalized Glass (Synthetic Glass)) — gemstone

Opalite

Man-made Opalized Glass (Synthetic Glass)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Ruby (Corundum (Al2O3 with Chromium trace)) — gemstone

Ruby

Corundum (Al2O3 with Chromium trace)

Mixed Mineral Bead Bracelet (Polycrystalline and Monocrystalline Silicates/Oxides (Quartz, Howlite, Hematite)) — gemstone

Mixed Mineral Bead Bracelet

Polycrystalline and Monocrystalline Silicates/Oxides (Quartz, Howlite, Hematite)

Ruby (Raw Corundum) (Alumina (Al2O3) with Chromium traces) — gemstone

Ruby (Raw Corundum)

Alumina (Al2O3) with Chromium traces

Ruby / Pink Sapphire (Corundum (Al2O3 with Chromium impurities)) — gemstone

Ruby / Pink Sapphire

Corundum (Al2O3 with Chromium impurities)

Aquamarine and Moonstone (Beryl (Be3Al2Si6O18) and Orthoclase (KAlSi3O8)) — gemstone

Aquamarine and Moonstone

Beryl (Be3Al2Si6O18) and Orthoclase (KAlSi3O8)

Opalite (Synthetic Opalized Glass) — gemstone

Opalite

Synthetic Opalized Glass

Smoky Quartz (Faceted) (Silicon Dioxide (SiO2)) — gemstone

Smoky Quartz (Faceted)

Silicon Dioxide (SiO2)

Dragon Vein Agate (Silicon dioxide / Chalcedony (with heat/dye treatment) SiO2) — gemstone

Dragon Vein Agate

Silicon dioxide / Chalcedony (with heat/dye treatment) SiO2

Amethyst and Rose Quartz Beads (Crystalline Quartz (SiO2) with trace elements) — gemstone

Amethyst and Rose Quartz Beads

Crystalline Quartz (SiO2) with trace elements

Mexican Cantera Opal (Amorphous hydrated silica (SiO2·nH2O) in Rhyolitic host rock) — gemstone

Mexican Cantera Opal

Amorphous hydrated silica (SiO2·nH2O) in Rhyolitic host rock

Chalcedony (Dyed Agate and Citrine-style Quartz) (Silicon Dioxide (SiO2)) — gemstone

Chalcedony (Dyed Agate and Citrine-style Quartz)

Silicon Dioxide (SiO2)

Moonstone (Orthoclase and Albite (KAlSi3O8 / NaAlSi3O8)) — gemstone

Moonstone

Orthoclase and Albite (KAlSi3O8 / NaAlSi3O8)

Amethyst and Rose Quartz Jewelry (Silicon Dioxide (SiO2)) — gemstone

Amethyst and Rose Quartz Jewelry

Silicon Dioxide (SiO2)

Mystic Topaz (Treated Quartz or Topaz) (Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating) — gemstone

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating

Imperial Topaz (Al2SiO4(F,OH)2 (Fluorine-bearing Aluminum Silicate)) — gemstone

Imperial Topaz

Al2SiO4(F,OH)2 (Fluorine-bearing Aluminum Silicate)

Purple Garnet (Magnesium Aluminum Silicate (Pyrope-Almandine series) Mg3Al2(SiO4)3) — gemstone

Purple Garnet

Magnesium Aluminum Silicate (Pyrope-Almandine series) Mg3Al2(SiO4)3

Amber (Succinite (Fossilized Resin)) — gemstone

Amber

Succinite (Fossilized Resin)

Carnelian Agate (Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities) — gemstone

Carnelian Agate

Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities

Carnelian (SiO2 (Silicon Dioxide with Iron Oxide impurities)) — gemstone

Carnelian

SiO2 (Silicon Dioxide with Iron Oxide impurities)

Chevron Amethyst (Silicon Dioxide (SiO2) with Fe3+ impurities) — gemstone

Chevron Amethyst

Silicon Dioxide (SiO2) with Fe3+ impurities