Citrine
Silicon dioxide (SiO2)
mineral
Category
Igneous, Sedimentary, Metamorphic
Browse igneous, sedimentary, metamorphic specimens identified by the Rock Identifier community.
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Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Banded Agate
Silicon Dioxide (SiO2)
mineral
Yellow Citrine Quartz
Silicon Dioxide (SiO₂)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Milky Quartz on Matrix
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Garnet (Pyrope or Almandine)
Silicate (X3Y2Si3O12)
mineral
Biotite (Black Mica)
Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)
mineral
Citrine or Yellow Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Star Ruby
Corundum (Al2O3 with chromium and rutile inclusions)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Quartz (Silicon Dioxide) - SiO2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
mineral
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Ruby in Matrix
Corundum (Al2O3)
mineral
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)
mineral
Magnetite (in matrix)
Magnetite (Fe3O4)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Native Gold (in Jewelry)
Gold (Au)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Moonstone (Adularia)
Potassium aluminum silicate (KAlSi3O8)
mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
mineral group
Serpentine
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe,Al)2O5(OH)4
metamorphic
Unakite
Epidotized Granite
metamorphic
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
metamorphic
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
igneous
Dalmation Stone (often called Dalmatian Jasper)
Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite
igneous
Soapstone / Steatite
Steatite (primarily Talc, Mg3Si4O10(OH)2)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Greenstone / Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Actinolitic Schist
metamorphic