Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Gemstone
Browse gemstone specimens identified by the Rock Identifier community.
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Diamond (set in a gold ring)
Carbon (C) - Adamantine cubic carbon
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Amber
Succinite (organic hydrocarbon)
mineraloid
Quartz (Quartzite)
Silicon Dioxide (SiO2)
metamorphic
Beryl (likely var. Aquamarine or Goshenite) in Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Rough Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chrysocolla in Malachite
Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral / metamorphic
Chert Nodule
Microcrystalline Silica (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Unakite
Epidotized Granite
metamorphic
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
igneous
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Black Onyx
Silicon dioxide / Chalcedony (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Chert (with Quartz Druzy)
Microcrystalline Silica (SiO2)
sedimentary
Ruby (Raw Corundum)
Corundum (Al2O3:Cr)
mineral
Red Jasper
Silicon Dioxide (SiO2) containing Iron Oxide inclusions
sedimentary
Quartz (Smoky/Granular variety)
Silicon Dioxide (SiO2)
mineral
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
mineral
Obsidian
Volcanic Glass (SiO2)
igneous
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
mineral
Magnetite (in matrix)
Magnetite (Fe3O4)
mineral
Unakite
Unakite (Epidotized Granite)
metamorphic
Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Labradorite (Gray Feldspar)
(Ca, Na)(Al, Si)4O8
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral