Clear Quartz
Silicon dioxide (SiO2)
Category
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Clear Quartz
Silicon dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
Pyrite (Iron Pyrite)
Iron Sulfide (FeS2)
Quartz (beads)
SiO2 (Silicon Dioxide)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Gneiss
Gneiss
Citrine Quartz
Silicon Dioxide (SiO2)
Magnetite / Ironstone
Iron(II,III) oxide (Fe3O4)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (likely Milky Quartz or Chalcedony)
Quartz (SiO2 - Silicon Dioxide)
Quartz
Silicon Dioxide (SiO2)
Green Aventurine and Clear Quartz
Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)
Pyrite (or Fool's Gold)
Pyrite (FeS₂)
Likely milky quartz fragment
Quartz (SiO₂)
Calcite
Calcium Carbonate (CaCO3)
Quartz
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Ruby
Corundum (Al2O3)
Quartz
Silicon Dioxide (SiO2)
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Cloudy Quartz
Quartz (Silicon Dioxide, SiO2)
Yellow Chalcedony
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Specular Hematite
Iron(III) oxide (Fe2O3)