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

Ammolite (Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)) — mineral

Ammolite

Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)

Gemstone Ring (N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ) — gemstone

Gemstone Ring

N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ

Amber (Succinite (Organic Gemstone)) — mineral

Amber

Succinite (Organic Gemstone)

Diamond and Gold Jewelry (Carbon (Diamond) / Au (Gold)) — gemstone

Diamond and Gold Jewelry

Carbon (Diamond) / Au (Gold)

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Cubic Zirconia (simulant) or Diamond (ZrO2 (Cubic Zirconia) or C (Diamond)) — gemstone

Cubic Zirconia (simulant) or Diamond

ZrO2 (Cubic Zirconia) or C (Diamond)

Pearl necklace (Pearl, primarily aragonite (CaCO₃) and conchiolin) — gemstone

Pearl necklace

Pearl, primarily aragonite (CaCO₃) and conchiolin

Amber (Succinrite (Organic Gemstone)) — mineraloid

Amber

Succinrite (Organic Gemstone)

Amber (Organic gemstone (Succinite)) — mineral

Amber

Organic gemstone (Succinite)

Amber (Succinates (Organic Gemstone)) — mineral

Amber

Succinates (Organic Gemstone)

Red Coral (Corallium rubrum) — gemstone

Red Coral

Corallium rubrum

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Smoky/Rose Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Rose Quartz Pebble)

Silicon Dioxide (SiO2)

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Black Opal Ring (Carved Opal) (Hydrated Silicon Dioxide (SiO2·nH2O)) — gemstone

Black Opal Ring (Carved Opal)

Hydrated Silicon Dioxide (SiO2·nH2O)

Cubic Zirconia (or possibly Diamond) (Zirconium dioxide (or Carbon)) — gemstone

Cubic Zirconia (or possibly Diamond)

Zirconium dioxide (or Carbon)

Emerald (green gemstone) pendant (Emerald, green variety of beryl (Be₃Al₂Si₆O₁₈); stones appear to be faceted and set in jewelry) — gemstone

Emerald (green gemstone) pendant

Emerald, green variety of beryl (Be₃Al₂Si₆O₁₈); stones appear to be faceted and set in jewelry

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

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

Citrine

Silicon Dioxide (SiO2) with iron impurities

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Moonstone (Orthoclase (KAlSi3O8)) — mineral

Moonstone

Orthoclase (KAlSi3O8)

Crackle Glass (Simulated Gemstone) (Amorphous Solid (SiO2)) — man-made glass

Crackle Glass (Simulated Gemstone)

Amorphous Solid (SiO2)

Blue Aventurine (Quartz (Silicon Dioxide, SiO2) with inclusions) — mineral

Blue Aventurine

Quartz (Silicon Dioxide, SiO2) with inclusions

Hypersthene (Hypersthene ((Mg,Fe)SiO3)) — mineral

Hypersthene

Hypersthene ((Mg,Fe)SiO3)

Amethyst (or Light Amethyst / Rose Quartz) (Quartz (Silicon Dioxide, SiO2)) — mineral

Amethyst (or Light Amethyst / Rose Quartz)

Quartz (Silicon Dioxide, SiO2)

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

Rough Garnet (Almandine)

Almandine Garnet (Fe3Al2(SiO4)3)

Faceted yellow gemstone, possibly citrine (Unconfirmed; citrine is yellow quartz (SiO₂)) — gemstone

Faceted yellow gemstone, possibly citrine

Unconfirmed; citrine is yellow quartz (SiO₂)

Faceted Gemstone (Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass) — gemstone

Faceted Gemstone

Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Amethyst stud earrings (Amethyst, purple quartz (SiO₂)) — gemstone

Amethyst stud earrings

Amethyst, purple quartz (SiO₂)

Amethyst pendant (Amethyst, purple variety of quartz (SiO₂)) — gemstone

Amethyst pendant

Amethyst, purple variety of quartz (SiO₂)

Dyed Magnesite (or Howlite) (Magnesium carbonate (MgCO3) / Calcium borosilicate hydroxide) — mineral

Dyed Magnesite (or Howlite)

Magnesium carbonate (MgCO3) / Calcium borosilicate hydroxide

Rough Amber (likely Copal or immature Amber) (Organic gemstone / Succinite (if Baltic)) — mineral

Rough Amber (likely Copal or immature Amber)

Organic gemstone / Succinite (if Baltic)

Amber (Succinicum (Organic Gemstone - Resinite)) — mineraloid

Amber

Succinicum (Organic Gemstone - Resinite)

Ammolite (Biogenic gemstone (Aragonite, CaCO3)) — mineral

Ammolite

Biogenic gemstone (Aragonite, CaCO3)

Red Coral (Precious Coral) (Corallium rubrum (calcium carbonate, primarily calcite with trace carotenes)) — gemstone

Red Coral (Precious Coral)

Corallium rubrum (calcium carbonate, primarily calcite with trace carotenes)

Tumbled carnelian (Carnelian, a reddish-orange variety of chalcedony (microcrystalline quartz, SiO₂)) — mineral

Tumbled carnelian

Carnelian, a reddish-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Freshwater Pearl (Calcium Carbonate (CaCO3) - Aragonite/Calcite organic composite) — gemstone

Freshwater Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite organic composite

Red Jasper (Cryptocrystalline Quartz (SiO2 with Iron oxide inclusions)) — sedimentary

Red Jasper

Cryptocrystalline Quartz (SiO2 with Iron oxide inclusions)

Blue Topaz (Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2) — mineral

Blue Topaz

Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2

Peridot (Olivine ((Mg, Fe)2SiO4)) — gemstone

Peridot

Olivine ((Mg, Fe)2SiO4)