Rock Identifier

Category

Gemstone

Browse gemstone specimens identified by the Rock Identifier community.

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Achroite

Achroite

Alexandrite

Alexandrite

Almandine Garnet

Almandine Garnet

Amber

Amber

Andamooka Opal

Andamooka Opal

Andesine

Andesine

Andesine-Labradorite

Andesine-Labradorite

Andradite Garnet

Andradite Garnet

Ant Hill Garnet

Ant Hill Garnet

Aquamarine

Aquamarine

Australian Opal

Australian Opal

Aventurine Feldspar

Aventurine Feldspar

Yellow Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

sedimentary
Amazonite (Microcline (K(AlSi3O8))) — mineral

Amazonite

Microcline (K(AlSi3O8))

mineral
Petrified Wood (Silicified wood (principally SiO2)) — sedimentary

Petrified Wood

Silicified wood (principally SiO2)

sedimentary
Red Jasper (Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

sedimentary
Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

mineral
Jasper and Chert Conglomerate (Ferruginous Microcrystalline Quartz (SiO2)) — sedimentary

Jasper and Chert Conglomerate

Ferruginous Microcrystalline Quartz (SiO2)

sedimentary
Chert / Jasper (Silicon Dioxide (SiO2)) — sedimentary

Chert / Jasper

Silicon Dioxide (SiO2)

sedimentary
Carnelian Agate (Silicon Dioxide (SiO2) with iron oxide impurities) — Mineral

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide impurities

Mineral
Rhodochrosite (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

mineral
Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

mineral
Moonstone (Orthoclase feldspar ((K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase feldspar ((K,Na)AlSi3O8)

mineral
Rough Diamond (Pure Carbon (C)) — mineral

Rough Diamond

Pure Carbon (C)

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

Rhodonite

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

mineral
Dyed Agate (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

mineral
Pearl (Cultured or Natural) (Aragonite (CaCO3) with Conchiolin) — Organic Mineraloid

Pearl (Cultured or Natural)

Aragonite (CaCO3) with Conchiolin

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

Rhodonite

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

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

Jasper

Jasper (Silicon Dioxide) - SiO2

sedimentary
Red Jasper (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2)

sedimentary
Amber (Succinicum (C10H16O)) — mineral

Amber

Succinicum (C10H16O)

mineral
Amber (Succinite) — mineral

Amber

Succinite

mineral
Sunstone (Heliolite) (Plagioclase Feldspar ((Ca,Na)(Al,Si)4O8)) — mineral

Sunstone (Heliolite)

Plagioclase Feldspar ((Ca,Na)(Al,Si)4O8)

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

Red Chert (Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Sunstone ((Ca,Na)((Al,Si)2Si2O8) - Plagioclase Feldspar) — mineral

Sunstone

(Ca,Na)((Al,Si)2Si2O8) - Plagioclase Feldspar

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

Rhodonite

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

mineral
Precious Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Precious Opal

Hydrated amorphous silica (SiO2·nH2O)

mineral
Agate (Lake Superior Agate variant) (Chalcedony / Silicon Dioxide (SiO2)) — sedimentary

Agate (Lake Superior Agate variant)

Chalcedony / Silicon Dioxide (SiO2)

sedimentary
Garnet (Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3) — mineral

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3

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

Red Carnelian

Carnelian (Silicon Dioxide, SiO2)

mineral
Carnelian Agate (Carnelian (Silicon Dioxide, SiO2)) — mineral

Carnelian Agate

Carnelian (Silicon Dioxide, SiO2)

mineral
Jasper (Jasper (SiO2)) — sedimentary

Jasper

Jasper (SiO2)

sedimentary
Zoisite with Ruby / Anyolite (Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)) — metamorphic

Zoisite with Ruby / Anyolite

Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)

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

Agate

Banded Chalcedony (SiO2 - Silicon Dioxide)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Rainbow Hematite (Man-made/Treated) (Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)) — mineral

Rainbow Hematite (Man-made/Treated)

Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)

mineral
Sapphire (Raw/Rough) (Corundum (Al2O3)) — mineral

Sapphire (Raw/Rough)

Corundum (Al2O3)

mineral
Citrine Quartz (Silicon Dioxide (SiO₂) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO₂) with iron impurities

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

Golden Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

mineral
Sugilite (Sugilite [KNa2(Fe,Mn,Al)2Li3Si12O30]) — mineral

Sugilite

Sugilite [KNa2(Fe,Mn,Al)2Li3Si12O30]

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

Emerald In Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

mineral
Citrine or Yellow Quartz (Quartz (SiO2) with iron impurities) — mineral

Citrine or Yellow Quartz

Quartz (SiO2) with iron impurities

mineral
Yellow Howlite (Dyed Magnesite/Howlite) (Dyed Ca2B5SiO9(OH)5 (Howlite) or MgCO3 (Magnesite)) — mineral

Yellow Howlite (Dyed Magnesite/Howlite)

Dyed Ca2B5SiO9(OH)5 (Howlite) or MgCO3 (Magnesite)

mineral