Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Category
Browse metamorphic or igneous specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Blue Quartz
Quartz (Silicon Dioxide) with blue inclusions (SiO2)
Biotite Mica in Quartz
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) in Quartz (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz
Silicon Dioxide (SiO2)
Garnet
Garnet group species (likely Almandine, Fe3Al2(SiO4)3)
Rough Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Smoky Quartz
Silicon Dioxide (SiO₂)
Quartz (Milky/Rose Quartz variety)
Silicon Dioxide (SiO2)
Sapphire
Corundum (Al2O3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Magnetite with Serpentine
Magnetite (Fe3O4) in Serpentine Matrix
Yellow Citrine Quartz
Silicon Dioxide (SiO₂)
Magnetite / Iron Ore (likely Hematite-Magnetite mix)
Magnetite (Fe3O4)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Milky Quartz on Matrix
Quartz (Silicon Dioxide, SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz Pebble
Silicon Dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2)
Citrine
Silicon dioxide (SiO2)
Orthoclase Feldspar (Sunstone variety)
KAlSi3O8 (Potassium Aluminum Silicate)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz (with complementary stones in jewelry setting)
Smoky Quartz (Silicon Dioxide - SiO2)
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Potassium Feldspar
Orthoclase (KAlSi3O8)
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Yellow Calcite
Calcium Carbonate (CaCO3)
Citrine
Silicon dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Moonstone
Orthoclase Feldspar (KAlSi3O8)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Garnet (Pyrope or Almandine)
Silicate (X3Y2Si3O12)