Rock Identifier

Category

Mineral (Primary Constituent)

Browse mineral (primary constituent) specimens identified by the Rock Identifier community.

Pink Quartz / Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Pink Quartz / Rose Quartz

Silicon Dioxide (SiO2)

Specular Hematite (Specularite) (Hematite (Alpha-Fe2O3)) — mineral

Specular Hematite (Specularite)

Hematite (Alpha-Fe2O3)

Specular Hematite (Polished Sphere) (Hematite (Alpha Fe2O3)) — mineral

Specular Hematite (Polished Sphere)

Hematite (Alpha Fe2O3)

Diamond (appearing in jewelry) (Diamond (pure Carbon, C)) — mineral

Diamond (appearing in jewelry)

Diamond (pure Carbon, C)

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

Citrine (Quartz variant)

SiO2 (Silicon Dioxide)

Quartz Geode (Crystalline Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Geode

Crystalline Quartz (Silicon Dioxide, SiO2)

Hematite (Hematite, Iron(III) oxide (Fe2O3)) — mineral

Hematite

Hematite, Iron(III) oxide (Fe2O3)

Quartz (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst (Variety of Quartz)

Silicon Dioxide (SiO2) with iron impurities

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

Amethyst (Faceted)

Silicon Dioxide with Iron impurities (SiO2)

Rough Diamond (Diamond (Native Element Carbon, C)) — mineral

Rough Diamond

Diamond (Native Element Carbon, C)

Sapphire in a ring (Corundum (Al2O3)) — mineral

Sapphire in a ring

Corundum (Al2O3)

Blue Sapphire (Corundum (Al2O3) with traces of Iron and Titanium) — mineral

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Olivine (Peridot) (Magnesium Iron Silicate ((Mg, Fe)2SiO4)) — mineral

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Aragonite (Aragonite (Calcium Carbonate - CaCO3)) — mineral

Aragonite

Aragonite (Calcium Carbonate - CaCO3)

Galena in Quartz Matrix (Lead Sulfide (PbS) in Silicon Dioxide (SiO2)) — mineral

Galena in Quartz Matrix

Lead Sulfide (PbS) in Silicon Dioxide (SiO2)

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

Diamond

Natural Diamond (Carbon, C)

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Specular Hematite (Hematite (Fe2O3)) — mineral

Specular Hematite

Hematite (Fe2O3)

Garnet (Pyrope or Almandine) (Silicate (X3Y2Si3O12)) — mineral

Garnet (Pyrope or Almandine)

Silicate (X3Y2Si3O12)

Diamond (set in jewelry) (Carbon (C)) — mineral

Diamond (set in jewelry)

Carbon (C)

Red Hematite (Iron(III) oxide (Fe2O3)) — mineral

Red Hematite

Iron(III) oxide (Fe2O3)

Gold and Diamond (Native Gold (Au) and Diamond (C)) — mineral

Gold and Diamond

Native Gold (Au) and Diamond (C)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

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

Diamond inlaid in Jewelry

Carbon (C)

Alexandrite (Chrysoberyl (BeAl2O4 with Chromium traces)) — mineral

Alexandrite

Chrysoberyl (BeAl2O4 with Chromium traces)

Gold Ore / Native Gold (Native Gold (Au)) — mineral

Gold Ore / Native Gold

Native Gold (Au)

Gold Ore (in Quartz/Sulfide matrix) (Native Gold (Au) in Quartz (SiO2) and Pyrite (FeS2)) — mineral

Gold Ore (in Quartz/Sulfide matrix)

Native Gold (Au) in Quartz (SiO2) and Pyrite (FeS2)

Specular Hematite Geode/Nodule (Specularite (Polycrystalline Hematite), Fe2O3) — mineral

Specular Hematite Geode/Nodule

Specularite (Polycrystalline Hematite), Fe2O3

Aquamarine with Ruby Accent (Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)) — mineral

Aquamarine with Ruby Accent

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Silver (Jewelry form) (Native Silver (Ag)) — mineral

Silver (Jewelry form)

Native Silver (Ag)

Botryoidal Hematite (Kidney Ore) (Iron(III) oxide (Fe2O3)) — Mineral

Botryoidal Hematite (Kidney Ore)

Iron(III) oxide (Fe2O3)

Moissanite (Silicon Carbide (SiC)) — mineral

Moissanite

Silicon Carbide (SiC)

Gold Ore (Native Gold in Quartz (Au)) — mineral

Gold Ore

Native Gold in Quartz (Au)