Rock Identifier

Category

Gemstone

Browse gemstone specimens identified by the Rock Identifier community.

Ruby Zoisite (Anyolite (Ca2Al3(SiO4)3(OH) + Al2O3:Cr)) — metamorphic

Ruby Zoisite

Anyolite (Ca2Al3(SiO4)3(OH) + Al2O3:Cr)

metamorphic
Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

mineral
Potassium Feldspar (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar

Orthoclase (KAlSi3O8)

mineral
Black Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Black Jasper

Silicon Dioxide (SiO2) with impurities

sedimentary
Chert (Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

sedimentary
Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

mineral
Ruby (Raw Corundum) (Corundum (Aluminum Oxide with Chromium), Al2O3:Cr) — mineral

Ruby (Raw Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

mineral
Amber (Succinite) — mineral

Amber

Succinite

mineral
Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary
Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

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

Quartz / Milky Quartz

Quartz (Silicon Dioxide - SiO2)

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

Jasper (Red Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary
Ruby (Corundum) (Corundum (Aluminum Oxide with Chromium), Al2O3:Cr) — mineral

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

mineral
Green Tourmaline (Elbaite - Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4) — mineral

Green Tourmaline

Elbaite - Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4

mineral
Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

mineral
Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

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

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Orange Quartz (Citrine Quartz) (Silicon Dioxide (SiO2)) — mineral

Orange Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

mineral
Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

mineral
Chert (Black Chert/Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Black Chert/Flint)

Silicon Dioxide (SiO2)

sedimentary
Pink Quartzite (Quartzite (primarily SiO2 with trace Fe2O3)) — metamorphic

Pink Quartzite

Quartzite (primarily SiO2 with trace Fe2O3)

metamorphic
Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

mineral
Amazonite (K(AlSi3O8) - Potassium Feldspar (Microcline variant)) — mineral

Amazonite

K(AlSi3O8) - Potassium Feldspar (Microcline variant)

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

Almandine Garnet

Fe3Al2(SiO4)3

mineral
Yellow Aventurine (Silicon Dioxide (SiO2) with inclusion of Mica) — Mineral (Variety of Quartz)

Yellow Aventurine

Silicon Dioxide (SiO2) with inclusion of Mica

Mineral (Variety of Quartz)
Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

mineral
Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

sedimentary
White Quartz (Tumbled) (Quartz (Silicon Dioxide, SiO2)) — mineral

White Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

mineral
Amazonite (Amazon Stone) (Tectosilicate Microcline (KAlSi3O8)) — mineral

Amazonite (Amazon Stone)

Tectosilicate Microcline (KAlSi3O8)

mineral
Chert (Jasper/Jasperoid) (Chert (chemically precipitated microcrystalline Quartz, SiO2)) — sedimentary

Chert (Jasper/Jasperoid)

Chert (chemically precipitated microcrystalline Quartz, SiO2)

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

Milky Quartz (Quartz Vein)

Silicon Dioxide (SiO2)

mineral
Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

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

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Epidote (Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))) — mineral

Epidote

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

mineral
Aquamarine (Beryl (Be₃Al₂Si₆O₁₈)) — mineral

Aquamarine

Beryl (Be₃Al₂Si₆O₁₈)

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

Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary
Carnelian (a variety of Chalcedony) (Silicon Dioxide (SiO2) with Iron Oxide impurities) — mineral

Carnelian (a variety of Chalcedony)

Silicon Dioxide (SiO2) with Iron Oxide impurities

mineral
Greenstone (Metabasalt) — metamorphic

Greenstone

Metabasalt

metamorphic
Yellow Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary
Citrine Quartz (Crystalline Quartz (SiO2 with iron impurities)) — mineral

Citrine Quartz

Crystalline Quartz (SiO2 with iron impurities)

mineral