Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Carnelian
Carnelian (Silicon Dioxide - SiO2 with iron oxide impurities)
Raw Ruby (Corundum)
Corundum (Aluminum Oxide, Al2O3)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Amazonite
K(AlSi3O8) - Potassium aluminum silicate
White Quartz (Carved or Tumbled)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2)
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
Fluorite
Calcium Fluoride (CaF2)
Carnelian (a variety of Chalcedony)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
Quartz (Milky or Yellowish)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Carnelian
Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)
Amethyst-bearing quartz (rough/tumbled fragment)
Quartz, SiO₂; purple coloration from irradiation and trace iron
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
Quartz
Silicon Dioxide (SiO2)
Moonstone (Feldspar variety)
Orthoclase Feldspar (KAlSi3O8)
Pyrite
Iron Sulfide (FeS2)
Imperial Topaz
Al2SiO4(F,OH)2 (Fluorine-bearing Aluminum Silicate)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Ruby in Fuchsite
Corundum (Al2O3) in Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Fluorite
Calcium Fluoride (CaF2)
Jasper Beads (Polished)
Silicon Dioxide (SiO2)
Raw Corundum (Sapphire/Ruby variant)
Aluminum oxide (Al2O3)
Carnelian Agate
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with FeOOH inclusions)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Quartz
Silicon Dioxide (SiO2)
Larimar
Pectolite (Blue variety), NaCa2Si3O8(OH)
Quartz
Silicon Dioxide (SiO2)
Amethyst
SiO2 (Amethyst is a variety of Quartz)