Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral, jewelry specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with trace Iron impurities
Aquamarine
Beryl (Be3Al2Si6O18)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Amethyst (Tumbled)
Silicon Dioxide (SiO2) with iron impurities
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
Ocean Jasper Mushroom
Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)
Botryoidal Chalcedony (Druzy Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Quartz (Silicon Dioxide) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Blue Tiger's Eye (Hawk's Eye)
Silicified Crocidolite (Silicon Dioxide with inclusions of Crocidolite), SiO2
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Botryoidal Chalcedony (Agate/Carnelian)
Chalcedony (SiO2)
Peridot (Olivine)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
Fire Agate (Rough)
Silicon Dioxide (SiO2) - Variety of Chalcedony
Rough Precious Opal
Hydrated Silica (SiO2·nH2O)
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
Pyrite Sun (Pyrite Dollar)
Iron Disulfide (FeS2)
Sunstone
Oligoclase (Plagioclase Feldspar Group) - (Ca, Na)(Al, Si)4O8
Amethyst
SiO2 (Silicon Dioxide) - Purple variety of Quartz
Amazonite
Potassium Feldspar (Microcline) - K(AlSi3O8)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
Aquamarine
Beryl (Be3Al2Si6O18 with iron traces)
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with inclusions of Iron Oxide or Chlorite
Pyrite (on Shale/Matrix)
Iron Disulfide (FeS2)
Sunstone
Plagioclase Feldspar (Na, Ca)(Al, Si)4O8 with Hematite or Copper inclusions
Rose Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal Fragments)
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
Green Aura Quartz
Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)
Tahitian Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Chalcedony (Carnelian/Agate variety)
Silicon Dioxide (SiO2) with trace hematite/iron impurities
Carnelian
Silicon dioxide (SiO2) with iron oxide impurities
Carnelian
Carnelian (Silicon Dioxide, SiO2)
Red Carnelian
Carnelian (Silicon Dioxide - SiO2)
Druzy Quartz
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)