Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Category
Mineral (Man Made Glass, Not Natural)
Browse mineral (man made glass, not natural) specimens identified by the Rock Identifier community.
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Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
gemstone
Chert (Flint / Quartz Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Tektite (Indochinite)
Tektite (High-silica impactite glass)
meteorite
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Green Aventurine (or Green Quartz)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
mineral
Green Aventurine
Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
mineral
Aventurine
Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Green Aventurine
Quartzite (variety Aventurine) with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Tumbled white quartz or quartzite pebble
Quartz (SiO₂), possibly massive quartzite
mineral
Quartz (Smoky Quartz / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Citrine (or Yellow Chalcedony / Quartz)
Silicon Dioxide (SiO2)
mineral
Tumbled rose quartz
Quartz, silicon dioxide (SiO₂), pink variety
mineral
Citrine
Silicon Dioxide (SiO2) with iron impurities
Mineral
Rough Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Smoky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Sandstone (Calcareous or Ferruginous)
Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)
sedimentary
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
sedimentary
Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Citrine
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Tumbled agate or chalcedony
Microcrystalline quartz (SiO₂), likely brown/orange chalcedony or agate
mineral
Sandstone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Chert (varietal: Flint/Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz Druzy on Agate (River Cobble)
Silicon Dioxide (SiO2)
Mineral / Sedimentary (often associated with volcanic hosts)
Chert or Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 with K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Sandstone
Arenite
sedimentary
Sandstone Cobble
Arenite (primarily SiO2)
sedimentary
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide)
Igneous
White quartz pebble
Quartz (silicon dioxide, SiO₂)
mineral