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

Moonstone (Orthoclase Feldspar ((K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

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

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Red Jasper with Quartz Veins (SiO2 (Silicon Dioxide with Iron Oxide inclusions)) — sedimentary

Red Jasper with Quartz Veins

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

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

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

Diamond (appearing in jewelry) (Diamond (pure Carbon, C)) — mineral

Diamond (appearing in jewelry)

Diamond (pure Carbon, C)

Garnet (likely Almandine or Pyrope) (Garnet (Group Name), Fe3Al2(SiO4)3 or Mg3Al2(SiO4)3) — mineral

Garnet (likely Almandine or Pyrope)

Garnet (Group Name), Fe3Al2(SiO4)3 or Mg3Al2(SiO4)3

Carnelian Agate (Carnelian (Silicon Dioxide - SiO2)) — mineral

Carnelian Agate

Carnelian (Silicon Dioxide - SiO2)

Aquamarine (Beryl (Be3Al2Si6O18) with trace Iron (Fe2+)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18) with trace Iron (Fe2+)

Peridot (Olivine) (Magnesium Iron Silicate (Mg, Fe)2SiO4) — mineral

Peridot (Olivine)

Magnesium Iron Silicate (Mg, Fe)2SiO4

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

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Garnet (Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3) — mineral

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3

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

Peridot

Olivine (Mg, Fe)2SiO4

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

Emerald

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

Rhodochrosite (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

Red Jasper (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Rhodochrosite (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

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

Red Jasper

Silicon Dioxide with Iron inclusions (SiO2)

Fairburn Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Fairburn Agate

Cryptocrystalline Quartz (SiO2)

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

Red Jasper

Jasper (Silicon Dioxide with Hematite inclusions), SiO2

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Amazonite (Microcline (KAlSi3O8 variant)) — mineral

Amazonite

Microcline (KAlSi3O8 variant)

Jasper (Multi-color Chert) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (Multi-color Chert)

Silicon Dioxide (SiO2) with impurities

Rhodonite (Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)) — mineral

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

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

Agate (or Chalcedony)

Silicon Dioxide (SiO2)

Amber (Amber (C10H16O)) — mineral

Amber

Amber (C10H16O)

Jasper (Red Jasper) (Silicon Dioxide (SiO₂)) — sedimentary

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Red Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Amber (Succinite (Fossilized Resin)) — mineral

Amber

Succinite (Fossilized Resin)

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

Garnet (likely Almandine)

Almandine (Fe3Al2(SiO4)3)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Precious Opal

Hydrated Silica (SiO2·nH2O)

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

Turquoise

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

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

Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — metamorphic

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

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

Amethyst (Quartz)

Silicon Dioxide (SiO2)

Olivine (Magnesium Iron Silicate ((Mg, Fe)₂SiO₄)) — mineral

Olivine

Magnesium Iron Silicate ((Mg, Fe)₂SiO₄)

Olivine (Peridot) (Magnesium Iron Silicate ((Mg, Fe)2SiO4)) — mineral

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Brown Garnet (Andradite or Almandine Garnet (general formula X3Y2(SiO4)3)) — mineral

Brown Garnet

Andradite or Almandine Garnet (general formula X3Y2(SiO4)3)

Larimar (Slab) (Pectolite [NaCa2Si3O8(OH)]) — mineral

Larimar (Slab)

Pectolite [NaCa2Si3O8(OH)]

Green Aventurine (Quartz (Silicon Dioxide) with Fuchsite inclusions - SiO2) — mineral

Green Aventurine

Quartz (Silicon Dioxide) with Fuchsite inclusions - SiO2