Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
White Quartz
Quartz (Silicon Dioxide, SiO2)
Amazonite
Microcline (KAlSi3O8 with lead impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky / Clear Quartz Fragment)
Silicon Dioxide (SiO2)
Quartz (Yellow/Orange variety)
Silicon Dioxide (SiO2)
Carved Sea Turtle Figurine (Aventurine / Quartz / Jasper)
Quartz variety (SiO2) / Polycrystalline Quartz Aggregate
Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Dyed Cracked Agate
Silicon Dioxide (Quartz variety, SiO2)
Lake Superior Agate
Silicon Dioxide (Chalcedony variety)
Fuchsite (Chrome Mica)
K(Al,Cr)2(AlSi3O10)(OH)2
Ruby (Raw Corundum)
Corundum (Al2O3) with Chromium traces
Tourmaline crystals
Elbaite tourmaline; complex boron silicate, commonly approximated as Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
Quartz
Silicon Dioxide (SiO2)
Carnelian
Silicon dioxide (Chalcedony variety)
Tumbled carnelian
Carnelian, a reddish-orange variety of chalcedony (microcrystalline quartz, SiO₂)
Dragon Vein Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Pegmatite
Igneous Pegmatite
Bixbyite on Rhyolite
Bixbyite (Mn2+,Fe3+)2O3
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Amazonite
K(AlSi3O8)
Citrine Quartz
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2)
Yellow jasper carving
Jasper, an opaque microcrystalline variety of quartz (SiO₂), shaped as a butterfly
Quartz
Silicon Dioxide (SiO2)