Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (extraterrestrial) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Precious Opal
Hydrated amorphous silica (SiO2·nH2O)
Amethyst
Silicon Dioxide (SiO2) with Iron impurities
Chlorastrolite (Greenstone)
Chlorastrolite (Pumpellyite variety), Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2·H2O
Garnet (specifically Almandine)
Almandine (Fe3Al2(SiO4)3)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2) with Hematite/Limonite
Amethyst
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
Peridot
Olivine ((Mg, Fe)2SiO4)
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
Sunstone
Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)
Amethyst
Quartz (Silicon Dioxide with iron impurities) - SiO2
Amethyst
Amethyst (Varietal of Quartz), SiO2 (Silicon Dioxide)
Clear Quartz Geode
Crystalline Silicon Dioxide (SiO2)
Amethyst (Chevron or Banded variety)
Silicon Dioxide (SiO2) with iron impurities
White Topaz
Topaz - Al2SiO4(F,OH)2
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Sunstone
Oligoclase (a plagioclase feldspar variant), (Na,Ca)(Al,Si)4O8
Amethyst (Quartz Variety)
Amethyst (Silicon Dioxide - SiO2 with ferric iron impurities)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with Iron impurities)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Felted Quartz / Chlorite Quartz
Chlorite included Quartz (SiO2 + (Mg,Fe)3(Si,Al)2O5(OH)4)
Common Opal
Hydrated amorphous form of silica (SiO2·nH2O)
Moonstone
Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)
Citrine
Citrine (Silicon Dioxide, SiO2)
Amethyst
Quartz (Silicon Dioxide) with Iron impurities, SiO2
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Amethyst/Smoky Quartz Cluster
Silicon Dioxide (SiO2)
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with inclusions
Moss Agate
Chalcedony (SiO2) with inclusions of hornblende or chlorite
Carnelian
Carnelian (Chert/Chalcedony) - SiO2
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
Sunstone
Orthoclase or Oligoclase Feldspar (Na,Ca)(Al,Si)4O8
Amethyst
Amethyst (Silicon Dioxide with Iron impurities), SiO2
Tree Agate
Silicon Dioxide (SiO2) with dendritic inclusions
Diorite
Diorite (Intermediate intrusive igneous rock)
Pink Granite
Granite (Phaneritic igneous rock rich in Alkali Feldspar)