Pyrite
Iron Sulfide (FeS2)
mineral
Category
Metamorphic Or Igneous
Browse metamorphic or igneous specimens identified by the Rock Identifier community.
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Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite inclusions)
mineral
Citrine
Silicon Dioxide (SiO2) with ferric iron impurities
gemstone
Magnetite / Hematite mix
Magnetite (Fe3O4) and Hematite (Fe2O3)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite-bearing Rock
Iron Sulfide (FeS2) associated with host rock
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
mineral
Pebble Gravel Mix (Quartzite, Basalt, Chert)
Alluvial River Gravel / Aggregate Clasts
sedimentary
Rough Quartz (Milky / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite
(Ca,Na)(Al,Si)4O8 (Plagioclase Feldspar)
mineral
Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Garnet
Pyrope or Almandine (X3Y2(SiO4)3)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Kaolinite (Kaolin)
Kaolinite (Al2Si2O5(OH)4)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Yellow variety)
Silicon Dioxide (SiO2)
mineral
Aventurine
Aventurine Quartz (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone
Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Mineral
Natural freshwater pearls
Pearl (nacreous calcium carbonate; chiefly aragonite, CaCO₃)
gemstone
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral