Rock Identifier

Category

Organic Gemstone

Browse organic gemstone specimens identified by the Rock Identifier community.

Carnelian (Carnelian (Silica, SiO2)) — mineral

Carnelian

Carnelian (Silica, SiO2)

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

Rhodonite

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

Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Ruby in Matrix (Corundum (Al2O3)) — mineral

Ruby in Matrix

Corundum (Al2O3)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Rose Quartz (SiO2 with traces of Titanium, Iron, or Manganese)) — mineral

Rose Quartz

Rose Quartz (SiO2 with traces of Titanium, Iron, or Manganese)

Raw Citrine (Yellow Quartz) (Citrine / Silicon Dioxide (SiO2)) — mineral

Raw Citrine (Yellow Quartz)

Citrine / Silicon Dioxide (SiO2)

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

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Amazonite (K(AlSi3O8), Microcline (potassium feldspar)) — mineral

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Jasper (Yellow/Brown variety) (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Jasper (Yellow/Brown variety)

Silicon Dioxide (SiO2) with iron oxide impurities

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]

Smoky Quartz (Smoky Quartz (SiO2 - Silicon Dioxide with aluminum impurities)) — mineral

Smoky Quartz

Smoky Quartz (SiO2 - Silicon Dioxide with aluminum impurities)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Jasper (specifically Picture Jasper or Landscape Jasper) (Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz) — sedimentary

Jasper (specifically Picture Jasper or Landscape Jasper)

Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz

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

Sodalite

Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)

Carnelian (Red Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Red Chalcedony)

Silicon Dioxide (SiO2)

Rough Diamond (Diamond (Native Carbon, C)) — mineral

Rough Diamond

Diamond (Native Carbon, C)

Pearl (Calcium Carbonate (Aragonite) - CaCO3) — mineral

Pearl

Calcium Carbonate (Aragonite) - CaCO3

Lapis Lazuli (Complex mixture of Lazurite ((Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2), Calcite, and Pyrite) — metamorphic

Lapis Lazuli

Complex mixture of Lazurite ((Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2), Calcite, and Pyrite

Granite (Phaneritic Plutonic Igneous Rock (Rich in SiO2)) — igneous

Granite

Phaneritic Plutonic Igneous Rock (Rich in SiO2)

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

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]

Jadeite (NaAlSi2O6 (Sodium Aluminum Silicate)) — metamorphic

Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Ruby, Emerald, and Sapphire (Corundum and Beryl) (Corundum (Al2O3) and Beryl (Be3Al2Si6O18)) — mineral

Ruby, Emerald, and Sapphire (Corundum and Beryl)

Corundum (Al2O3) and Beryl (Be3Al2Si6O18)

Fluorite and Rose Quartz (Fluorite (CaF2), Rose Quartz (SiO2)) — Mineral

Fluorite and Rose Quartz

Fluorite (CaF2), Rose Quartz (SiO2)

Chakra Stone Bracelet (mixed gemstones) (Multi-mineral/Gemstone assembly (primarily Quartz variety beads)) — mineral

Chakra Stone Bracelet (mixed gemstones)

Multi-mineral/Gemstone assembly (primarily Quartz variety beads)

Jasper (Jasper (Silica/Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silica/Silicon Dioxide, SiO2)

Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Fire Opal (Common/Precious in Matrix) (Hydrated Silica (SiO2·nH2O)) — mineral

Fire Opal (Common/Precious in Matrix)

Hydrated Silica (SiO2·nH2O)

Yellow Quartz (Citrine Quartzite) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartzite)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Quartzite fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Quartzite fragment)

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2)) — mineral

Jasper

Silicon Dioxide (SiO2)

Quartz (with iron oxide staining) (Silicon Dioxide (SiO2)) — mineral

Quartz (with iron oxide staining)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Shale or Argillite (Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)) — Sedimentary or Metamorphic (low grade)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Sedimentary or Metamorphic (low grade)

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

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

White Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — Mineraloid

White Opal

Hydrated Amorphous Silica (SiO2·nH2O)