Rock Identifier

Category

Mineral (Specifically A Mineraloid)

Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

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

Amethyst (Quartz variety)

Silicon Dioxide (SiO2) with iron impurities

Bloodstone (Heliotrope) (Silicon dioxide (SiO2) with Hematite inclusions) — mineral

Bloodstone (Heliotrope)

Silicon dioxide (SiO2) with Hematite inclusions

Muscovite Mica (Muscovite - KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

Almandine Garnet & Tumbled Citrine Quartz (Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)) — mineral

Almandine Garnet & Tumbled Citrine Quartz

Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)

Chalcedony (Agate/Carnelian variant) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO2)

Citrine (Yellow Quartz (SiO2)) — mineral

Citrine

Yellow Quartz (SiO2)

Carnelian (Red Agate) (Chalcedony (SiO2 with Iron Oxide impurities)) — mineral

Carnelian (Red Agate)

Chalcedony (SiO2 with Iron Oxide impurities)

Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

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

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Azurite with Malachite and Limonite (Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2) — mineral

Azurite with Malachite and Limonite

Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2

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

Malachite

Malachite (Cu2CO3(OH)2)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Dendritic Moss Agate (Chalcedony (Silicon Dioxide, SiO2) with inclusions) — mineral

Dendritic Moss Agate

Chalcedony (Silicon Dioxide, SiO2) with inclusions

Synthetic Sapphire and Ion-X Glass (Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass) — mineral

Synthetic Sapphire and Ion-X Glass

Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass

Petrified Wood (Silicified Wood (primarily SiO2)) — mineral

Petrified Wood

Silicified Wood (primarily SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Garden Quartz (Included Quartz (SiO2 with accessory minerals such as Chlorite, Hematite, or Feldspar)) — mineral

Garden Quartz

Included Quartz (SiO2 with accessory minerals such as Chlorite, Hematite, or Feldspar)

Pink Opal (Hydrated silicon dioxide (SiO2·nH2O) with inclusions) — mineral

Pink Opal

Hydrated silicon dioxide (SiO2·nH2O) with inclusions

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

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

Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

Man-made Green Quartz (Lab-grown or Treated) (Silicon Dioxide (SiO2) with artificial coloration) — mineral

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

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

Labradorite

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Amethyst

Crystalline Silicon Dioxide with Iron impurities (SiO2)

Nobby Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Nobby Hematite (Iron Ore)

Hematite (Fe2O3)

Aventurine and Amazonite (Silicon Dioxide (SiO2) with inclusions and Microcline (KAlSi3O8)) — Mineral

Aventurine and Amazonite

Silicon Dioxide (SiO2) with inclusions and Microcline (KAlSi3O8)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Banded Agate (Crazy Lace/Mexican Agate Variety) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Crazy Lace/Mexican Agate Variety)

Silicon Dioxide (SiO2)

Shungite (Shungite (carbon-rich Precambrian rock)) — mineral

Shungite

Shungite (carbon-rich Precambrian rock)

Carnelian Agate (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with Hematite inclusions

Limonite (vibrant yellowish-brown iron oxide) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (vibrant yellowish-brown iron oxide)

Limonite (FeO(OH)·nH2O)

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

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Garden Quartz (Lodolite) (Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)) — mineral

Garden Quartz (Lodolite)

Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)

Milky Quartz with Mineral Inclusions (Silicon Dioxide (SiO2) with miscellaneous inclusions) — mineral

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2) with miscellaneous inclusions

Black Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Black Opal

Hydrated Silica (SiO2·nH2O)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

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

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Diamond inlaid in Jewelry (Carbon (C)) — mineral

Diamond inlaid in Jewelry

Carbon (C)

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

Amethyst

Silicon Dioxide with trace Iron (SiO2)