Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Category
Mineral (Found In Igneous And Metamorphic Rocks)
Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.
Learn about Mineral (Found In Igneous And Metamorphic Rocks) in the encyclopedia
View all →
Calcite
Calcite (CaCO₃, Calcium Carbonate)
Mineral
Quartz with Iron Oxide
SiO2
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Garnet (Almandine)
Almandine Fe3Al2(SiO4)3
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Agate
Chalcedony (SiO2)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Greenschist
Chlorite schist
metamorphic
Corundum (Sapphire variant)
Aluminum Oxide (Al2O3)
mineral
Yellow Agate
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
metamorphic
Corundum (Sapphire in Matrix)
Aluminum Oxide (Al2O3)
mineral
Pink quartz bead strand (likely rose quartz or pink dyed quartz)
Quartz, silicon dioxide (SiO₂); probable rose quartz variety, possibly dyed or treated quartz/chalcedony
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Sodium Aluminum Silicate Chloride) - Na8(Al6Si6O24)Cl2
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Biotite on Quartz
Biotite Mica (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
mineral
Greenstone / River Jadeite pebble
Metavolcanic rock / Chlorite or Actinolite-rich schist
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Quartz Pebble (with Feldspar/Mica)
Granitic Quartz / SiO2 with KAlSi3O8
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Quartz
SiO2
mineral
Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)
Quartz (SiO₂)
Mineral
Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Blue Sapphire (Tumbled/Polished)
Corundum (Al2O3)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz (Milky / Massive Quartz)
Silicon Dioxide (SiO2)
mineral
Garnet in Schist or Pegmatite
Almandine Garnet (Fe3Al2(SiO4)3) in host rock
metamorphic