Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral, Organic Gemstone
Browse mineral, organic gemstone specimens identified by the Rock Identifier community.
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Fancy Jasper (Bloodstone variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Black Obsidian with white veins
Volcanic Glass (70–75% SiO2)
igneous
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Turquoise
Hydrated phosphate of copper and aluminum; CuAl6(PO4)4(OH)8·4H2O
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
mineral
Red Jasper
Silicon dioxide with hematite impurities (SiO2 + Fe2O3)
mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pink Rhodonite
Manganese Silicate (MnSiO3)
mineral
Larimar
Pectolite (NaCa2Si3O8(OH))
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Massive Quartz (Yellow/Citrine variety)
Silicon Dioxide (SiO2)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Mineral
Garnet
Almandine formula: Fe3Al2(SiO4)3
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Agate (Polished Nodule)
Agate (Silicon Dioxide, SiO2)
mineral
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Fluorite (Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
mineral
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Tourmaline
Complex Borosilicate - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite species)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
mineral
Hypersthene
Hypersthene (Enstatite variety), (Mg,Fe)SiO3
Mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Diamond
Native Carbon (C)
mineral
Red Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Clear/White Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Peridot
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
mineral
Amethyst and Hematite Bracelet
Amethyst (SiO2) and Hematite (Fe2O3)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral