Rock Identifier

Category

Organic Gemstone (Not A Rock)

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Golden Quartz (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Golden Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

mineral
Mookaite Jasper (Radiolarite (Silicon Dioxide, SiO2)) — sedimentary

Mookaite Jasper

Radiolarite (Silicon Dioxide, SiO2)

sedimentary
Jasper (Jasper (Cryptocrystalline Quartz, SiO2)) — sedimentary

Jasper

Jasper (Cryptocrystalline Quartz, SiO2)

sedimentary
Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

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

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

mineral
Red Jasper (Jasper (Silicon Dioxide) - SiO2) — mineral

Red Jasper

Jasper (Silicon Dioxide) - SiO2

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

Banded Agate

Agate (Silicon Dioxide - SiO2)

mineral
Blue Celestite (Celestine) (Strontium sulfate (SrSO4)) — mineral

Blue Celestite (Celestine)

Strontium sulfate (SrSO4)

mineral
Rutilated Quartz (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral
Quartz (Milky or Rough Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Rough Variety)

Silicon Dioxide (SiO2)

mineral
Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

mineral
Red Jasper (River Pebble) (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper (River Pebble)

Jasper (Silicon Dioxide, SiO2)

sedimentary
Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

mineral
Greenstone (Metabasalt) — metamorphic

Greenstone

Metabasalt

metamorphic
Banded Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Banded Agate

Chalcedony (Silicon Dioxide, SiO2)

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

Garnet (specifically Almandine)

Almandine (Fe3Al2(SiO4)3)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

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

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Peach/Orange variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Peach/Orange variety)

Silicon Dioxide (SiO2)

mineral
Slag Glass (Glassy Silicate Residue) — industrial byproduct

Slag Glass

Glassy Silicate Residue

industrial byproduct
Sphalerite in Matrix (Polished Point) (Zinc sulfide (Zn,Fe)S) — mineral

Sphalerite in Matrix (Polished Point)

Zinc sulfide (Zn,Fe)S

mineral
Blue Apatite (Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Red Jasper (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

sedimentary
Milky Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

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

Amethyst

Quartz (Silicon Dioxide) - SiO2

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

Citrine

Citrine (Silicon Dioxide - SiO2)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Rough Sapphire (Corundum (Al2O3)) — mineral

Rough Sapphire

Corundum (Al2O3)

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

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

mineral
Labradorite (Labradorite ((Ca,Na)(Al,Si)4O8)) — mineral

Labradorite

Labradorite ((Ca,Na)(Al,Si)4O8)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Banded Calcite (often sold as Onyx Marble) (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often sold as Onyx Marble)

Calcite (Calcium Carbonate, CaCO3)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

mineral
Pink Feldspar (Orthoclase) (Orthoclase Feldspar (KAlSi3O8)) — mineral

Pink Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

mineral