Rock Identifier

Category

Gemstone

Browse gemstone specimens identified by the Rock Identifier community.

Learn about Gemstone in the encyclopedia

Achroite

Alexandrite

Almandine Garnet

Almandine Garnet

Amber

Andamooka Opal

Andesine

Andesine-Labradorite

Andesine-Labradorite

Andradite Garnet

Andradite Garnet

Ant Hill Garnet

Ant Hill Garnet

Aquamarine

Australian Opal

Australian Opal

Aventurine Feldspar

Aventurine Feldspar

Green Kyanite (Kyanite (Al2SiO5)) — mineral

Green Kyanite

Kyanite (Al2SiO5)

Tiger's Eye (Silicon dioxide (SiO2) with inclusions of Limonite) — metamorphic

Tiger's Eye

Silicon dioxide (SiO2) with inclusions of Limonite

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Amethyst (Rough Crystal) (Silicon Dioxide (SiO2 with ferric iron impurities)) — mineral

Amethyst (Rough Crystal)

Silicon Dioxide (SiO2 with ferric iron impurities)

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

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

Red Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

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

Amethyst

Silicon Dioxide with iron impurities (SiO2)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

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

Amethyst

Silicon Dioxide with trace Iron (SiO2)

Quartz Druse on Basalt Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druse on Basalt Matrix

Silicon Dioxide (SiO2)

Tree Agate (Silicon Dioxide with inclusions (SiO2)) — mineral

Tree Agate

Silicon Dioxide with inclusions (SiO2)

Geode (Quartz / Chalcedony Geode) (SiO2 (Silicon Dioxide)) — sedimentary

Geode (Quartz / Chalcedony Geode)

SiO2 (Silicon Dioxide)

Sunstone (Plagioclase Feldspar (Na,Ca)(Si,Al)3O8) — mineral

Sunstone

Plagioclase Feldspar (Na,Ca)(Si,Al)3O8

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Bloodstone (Heliotrope) (Cryptocrystalline Quartz (SiO2 with iron oxide inclusions)) — mineral

Bloodstone (Heliotrope)

Cryptocrystalline Quartz (SiO2 with iron oxide inclusions)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz with possible inclusion (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz with possible inclusion

Silicon Dioxide (SiO2)

Nile Agate (Silicon Dioxide (SiO2)) — sedimentary

Nile Agate

Silicon Dioxide (SiO2)

Malachite in Host Rock (Cu2CO3(OH)2) — mineral

Malachite in Host Rock

Cu2CO3(OH)2

Quartz with Tourmaline inclusion (Tourmalinated Quartz) (Silicon Dioxide (SiO2) with Tourmaline inclusions) — mineral

Quartz with Tourmaline inclusion (Tourmalinated Quartz)

Silicon Dioxide (SiO2) with Tourmaline inclusions

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

Red Jasper

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Rough Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Rough Amethyst

Silicon Dioxide (SiO2) with iron impurities

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Iron-Stained Quartz (Quartzite / Chert) (Silicon Dioxide (SiO2) with Hematite/Limonite inclusions) — mineral

Iron-Stained Quartz (Quartzite / Chert)

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Amazonite (Microcline Feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline Feldspar (KAlSi3O8)

Feldspar (Plagioclase / Potassium Feldspar) (Feldspar Group (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)) — mineral

Feldspar (Plagioclase / Potassium Feldspar)

Feldspar Group (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)

Green Jasper (River Pebble) (Silicon Dioxide (SiO2) with iron silicate inclusions) — sedimentary

Green Jasper (River Pebble)

Silicon Dioxide (SiO2) with iron silicate inclusions

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Malachite (Malachite - Cu2CO3(OH)2) — mineral

Malachite

Malachite - Cu2CO3(OH)2

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

Quartz (Milky/Yellowish)

Silicon Dioxide (SiO2)

Chalcedony with Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Druzy Quartz

Silicon Dioxide (SiO2)

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

Sunstone

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

Peach Moonstone (Potassium Aluminum Silicate (KAlSi3O8) with inclusions) — mineral

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8) with inclusions

Labradorite ((Ca,Na)(Al,Si)4O8 (Sodic-calcic plagioclase feldspar)) — mineral

Labradorite

(Ca,Na)(Al,Si)4O8 (Sodic-calcic plagioclase feldspar)

Dyed Blue Agate (Chalcedony (Silicon Dioxide / SiO2)) — mineral

Dyed Blue Agate

Chalcedony (Silicon Dioxide / SiO2)

Prasiolite (Green Quartz) / Sea Glass Amalgam (SiO2 (Silicon Dioxide)) — mineral

Prasiolite (Green Quartz) / Sea Glass Amalgam

SiO2 (Silicon Dioxide)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Moonstone (with Tourmaline/Mica) (Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)) — mineral

Moonstone (with Tourmaline/Mica)

Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Serpentinite (Serpentine group minerals ((Mg, Fe)3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentine group minerals ((Mg, Fe)3Si2O5(OH)4)