Rock Identifier

Category

Mineral Specimen

Browse mineral specimen specimens identified by the Rock Identifier community.

Learn about Mineral Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Aquamarine Matrix

Aquamarine Matrix

Morganite Crystal

Morganite Crystal

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Rose Quartz (Quartz (Silicon Dioxide) formula SiO2 with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Quartz (Silicon Dioxide) formula SiO2 with trace amounts of titanium, iron, or manganese

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with inclusions of Hematite or Iron oxide) — mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Hematite or Iron oxide

Moonstone (Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8)) — mineral

Moonstone

Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8)

Strawberry Quartz (Quartz with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Strawberry Quartz

Quartz with Hematite inclusions (SiO2 + Fe2O3)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Blue Calcite Sphere (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite Sphere

Calcium Carbonate (CaCO3)

Carnelian Agate (Silicon Dioxide (SiO2) - Variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Moss Agate (Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Tiger's Eye (Silicon dioxide (SiO2) with crocidolite inclusions) — Mineral

Tiger's Eye

Silicon dioxide (SiO2) with crocidolite inclusions

Gray Chalcedony Gemstone (Chalcedony (SiO2)) — mineral

Gray Chalcedony Gemstone

Chalcedony (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Tourmalinated Quartz (Quartz (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) inclusions) — mineral

Tourmalinated Quartz

Quartz (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) inclusions

Moonstone (Orthoclase Feldspar (KAlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Banded Agate (specifically Lake Superior Agate) (Silicon dioxide (SiO2) - Cryptocrystalline Chalcedony) — mineral

Banded Agate (specifically Lake Superior Agate)

Silicon dioxide (SiO2) - Cryptocrystalline Chalcedony

Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Petrified Wood

Silicified Wood (primarily SiO2)

Citrine (Yellow Quartz (SiO2)) — mineral

Citrine

Yellow Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

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

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions

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

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

Bloodstone (Heliotrope)

Silicon dioxide (SiO2) with Hematite inclusions

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Banded Agate (Orca Agate) (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Banded Agate (Orca Agate)

Silicon Dioxide (SiO2) - Chalcedony variety

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

Moss Agate

Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)

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

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Quartz (Milk or Clear)

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Tiger's Eye (Silicon Dioxide with inclusions (SiO2)) — mineral

Tiger's Eye

Silicon Dioxide with inclusions (SiO2)

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

Citrine

Silicon Dioxide (SiO2) with iron impurities

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

Moonstone

Orthoclase feldspar ((K,Na)AlSi3O8)

Amethyst-bearing quartz (Quartz, SiO₂; purple variety amethyst, commonly in an amethyst-bearing geode or basaltic cavity) — mineral

Amethyst-bearing quartz

Quartz, SiO₂; purple variety amethyst, commonly in an amethyst-bearing geode or basaltic cavity

Quartz vein in metamorphic rock (Crystalline Silicon Dioxide (SiO2) in Host Rock) — metamorphic

Quartz vein in metamorphic rock

Crystalline Silicon Dioxide (SiO2) in Host Rock

Rounded gray river cobble, likely basaltic-andesite or andesite (Fine-grained intermediate to mafic volcanic rock; commonly plagioclase ± pyroxene, with possible alteration minerals) — igneous

Rounded gray river cobble, likely basaltic-andesite or andesite

Fine-grained intermediate to mafic volcanic rock; commonly plagioclase ± pyroxene, with possible alteration minerals

Jasper with Hematite (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)) — sedimentary

Jasper with Hematite

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Chert (Vuggy Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Vuggy Chert)

Silicon Dioxide (SiO2)