Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz (with complementary stones in jewelry setting)
Smoky Quartz (Silicon Dioxide - SiO2)
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Sunstone (Feldspar)
Oligoclase / Labradorite (Plagioclase Feldspar Group, (Na,Ca)Al1-2Si2-3O8)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (Metamorphic Rock)
Moonstone
Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)
Granite / Gneiss (Felsic Metamorphic or Igneous Rock)
Gneiss (or weathered Granite)
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
Quartz (Quartz Pebble)
Silicon Dioxide (SiO2)
Quartz (Milky/Yellowish)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Quartz Pebble
Silicon Dioxide (SiO2)
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
Magnetite (Lodestone variety)
Magnetite (Iron(II,III) oxide, Fe3O4)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz Pebble
Silicon Dioxide (SiO2)
Fuchsite Schist with Quartz
Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist
Star Sapphire
Corundum (Al2O3) with Rutile inclusions
Smoky Quartz
SiO2 (Silicon Dioxide)
Pyrite
Iron Sulfide (FeS2)
Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)