Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Amethyst
Quartz (SiO2) with trace iron impurities
Serpentine
Serpentinite (group of minerals based on (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Yellow quartz, possibly citrine
Quartz (SiO₂), yellow variety likely citrine; may also be iron-stained quartz
Dalmatian Jasper (Dalmatian Stone)
Peralkaline Rock with Feldspar and Arfvedsonite
Quartz (Milky/Smoky Quartz)
Silicon Dioxide (SiO2)
Carnelian
Silicon Dioxide (SiO2) - variety of Chalcedony
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Ocean Jasper
SiO2
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Jasper with Chalcedony
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Chert (Jasper variety)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Quartz (likely macrocrystalline variety)
Quartz (SiO₂)
Ferruginous Quartz
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3/FeO(OH))
Chert (Jasper)
Microcrystalline quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Red Jasper (Chert)
Silicon Dioxide (SiO2) with impure Iron Oxides
Quartz
Quartz (SiO2)
Amethyst
SiO2 (Silicon Dioxide)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Ruby
Corundum (Al2O3 with Chromium impurities)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Chert (Flint variety)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Granitic Pegmatite with Schorl
Granitic Pegmatite (NaAlSi3O8, KAlSi3O8, SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Smoky Quartz
Quartz (SiO₂)
Serpentine
Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4
Jasper
Jasper / Silicon Dioxide (SiO₂)
Chert (Brown Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Orange chalcedony (likely carnelian)
Microcrystalline quartz, SiO₂; iron-bearing chalcedony (carnelian)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Tumbled carnelian (orange-red chalcedony)
Carnelian, a microcrystalline variety of quartz (SiO₂)
Carnelian Agate
Silicon Dioxide (Chalcedony variety), SiO2
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
Tumbled Agate
Silicon Dioxide (Quartz variety: Chalcedony)
Carnelian
Silicon dioxide (chalcedony variety), SiO2
Polished carnelian (reddish-brown chalcedony)
Carnelian, a microcrystalline variety of quartz (SiO₂)