Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material)

Browse organic gemstone (not a rock or mineral in the traditional sense, but bio mineralized material) specimens identified by the Rock Identifier community.

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral

Carnelian

Silicon dioxide / Chalcedony (SiO2)

mineral

Quartz (Milky Variant)

Silicon Dioxide (SiO2)

mineral

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8

mineral

Carnelian

Carnelian (SiO2)

mineral

Raw Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

mineral

Botryoidal Chalcedony in Geode/Vug

Silicon Dioxide (SiO2)

mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Quartz (Clear or Cloudy)

Silicon Dioxide (SiO2)

mineral

Rhodonite

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

mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite

mineral

Sodalite

Na8(Al6Si6O24)Cl2

mineral

Quartz

Silicon Dioxide (SiO2)

mineral

Carnelian Agate

Silicon dioxide (SiO2) - Chalcedony variety

mineral

Amethyst

Amethyst (Silicon Dioxide, SiO2)

mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral

Lake Superior Agate

Silicon Dioxide (SiO2) - Variety Agate

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Peridot (Olivine)

Magnesium Iron Silicate (Mg, Fe)2SiO4

mineral

Chalcedony (Botryoidal Agate)

Silicon Dioxide (SiO2)

mineral

Quartz with Inclusions

Silicon Dioxide (SiO2) with various mineral inclusions

mineral

Rhodonite

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

mineral

Rhodonite

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

mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Lake Superior Agate

Cryptocrystalline Quartz (SiO2)

mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

mineral

Aquamarine

Beryl (Be3Al2Si6O18)

mineral

Aventurine

Silicon Dioxide (SiO2) with inclusions

metamorphic

Potassium Feldspar (Orthoclase)

KAlSi3O8 (Potassium Aluminum Silicate)

mineral

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

mineral

Spinel

Magnesium Aluminum Oxide (MgAl2O4)

mineral

Jasper (Green)

Silicon dioxide (SiO2)

Mineral/Sedimentary

Smoky Quartz occurring with Feldspar

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)

mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2)

mineral

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

mineral

Clear Quartz

Silicon Dioxide (SiO2)

mineral

Chrysocolla

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

mineral