Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous (Anthropogenic)
Browse igneous (anthropogenic) specimens identified by the Rock Identifier community.
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone (Feldspar)
Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Black Sand (Magnetite Sand)
Magnetite (Fe3O4)
mineral
Carnelian
Cryptocrystalline Quartz (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
Tectosilicate (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Grey Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Greenschist
Greenschist facies rock (containing chlorite, actinolite, and epidote)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amazonite with Smoky Quartz and Feldspar
Microcline (KAlSi3O8) with Quartz (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Soapstone / Steatite
Steatite (primarily Talc, Mg3Si4O10(OH)2)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Chalcopyrite in Matrix
Chalcopyrite (CuFeS2)
mineral
Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Rose Quartz (Aura Quartz)
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Mixed Gemstone Bracelet
Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)
Mineral/Rock assemblage
Granite
Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)
igneous
Chondrite Meteorite
Ordinary Chondrite (OC)
igneous
Smoky Quartz on Feldspar (Granite Pegmatite)
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)
igneous