Rock Identifier

Category

Organic Gemstone (Not A Mineral)

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

Amazonite (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Amazonite

Potassium Aluminum Silicate (KAlSi3O8)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

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

Milky Quartz (Quartz Vein)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Peridot (Olivine)

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

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

Rough Precious Opal

Hydrated Silica (SiO2·nH2O)

Sunstone (Oligoclase (Plagioclase Feldspar Group) - (Ca, Na)(Al, Si)4O8) — mineral

Sunstone

Oligoclase (Plagioclase Feldspar Group) - (Ca, Na)(Al, Si)4O8

Amazonite (Potassium Feldspar (Microcline) - K(AlSi3O8)) — Mineral

Amazonite

Potassium Feldspar (Microcline) - K(AlSi3O8)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Aquamarine (Beryl (Be3Al2Si6O18 with iron traces)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron traces)

Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with inclusions of Iron Oxide or Chlorite) — mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Iron Oxide or Chlorite

Chrysoberyl (Cyclic Twin) (Beryllium Aluminum Oxide (BeAl2O4)) — mineral

Chrysoberyl (Cyclic Twin)

Beryllium Aluminum Oxide (BeAl2O4)

Sodalite (Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)) — mineral

Sodalite

Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)

Fossil Shell (Bivalve) (Class Bivalvia (Likely a member of the Ostreidae or Gryphaeidae family), CaCO3) — sedimentary

Fossil Shell (Bivalve)

Class Bivalvia (Likely a member of the Ostreidae or Gryphaeidae family), CaCO3

Amethyst (variety of Quartz) (SiO2 (Silicon Dioxide)) — Mineral

Amethyst (variety of Quartz)

SiO2 (Silicon Dioxide)

Amethyst (Amethyst (variety of Quartz, SiO2)) — mineral

Amethyst

Amethyst (variety of Quartz, SiO2)

Chalcopyrite-bearing Ore (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite-bearing Ore

Chalcopyrite (CuFeS2)

Bloodstone (also known as Heliotrope) (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Bloodstone (also known as Heliotrope)

Silicon Dioxide (SiO2) - variety of Chalcedony

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

Amethyst

Amethyst (Quartz variety), Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Amazonite (K(AlSi3O8) - Microcline (Lead-bearing variety)) — mineral

Amazonite

K(AlSi3O8) - Microcline (Lead-bearing variety)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

Kunzite (Pink Spodumene) (Spodumene, LiAl(SiO3)2) — mineral

Kunzite (Pink Spodumene)

Spodumene, LiAl(SiO3)2

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

Amethyst (Druze)

Silicon Dioxide (SiO2) with iron impurities

Emerald In Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald In Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

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

Amethyst

Amethyst (SiO2 with Iron impurities)

Amazonite in Matrix (Potassium Feldspar (Microcline), KAlSi3O8) — mineral

Amazonite in Matrix

Potassium Feldspar (Microcline), KAlSi3O8

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)

Amazonite (Amazonite (KAlSi3O8, a variety of Microcline)) — mineral

Amazonite

Amazonite (KAlSi3O8, a variety of Microcline)

Chrysocolla in Matrix (Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla in Matrix

Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O

Rhodochrosite with Pyrite and Quartz (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite with Pyrite and Quartz

Manganese Carbonate (MnCO3)

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

Labradorite

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

Moonstone (Orthoclase Feldspar (KAlSi3O8)) — Mineral

Moonstone

Orthoclase Feldspar (KAlSi3O8)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Citrine (Citrine (Silicon Dioxide - SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide - SiO2)

Sunstone (Plagioclase feldspar (with Copper or Hematite inclusions)) — mineral

Sunstone

Plagioclase feldspar (with Copper or Hematite inclusions)

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

Rough Emerald

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

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

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Aquamarine (Beryl (Be3Al2Si6O18 with iron impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

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

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)