Obsidian
Obsidian (principally SiO2)
Category
Browse manufactured glass specimens identified by the Rock Identifier community.
Obsidian
Obsidian (principally SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite River Stone
Quartzite (SiO2)
Pink Quartzite Pebble
Metamorphic Quartzite (SiO2 with iron oxide inclusions)
Quartzite Pebbler
Quartzite (primarily SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions
Slag (Industrial Glass/Byproduct)
Anthropogenic Vitreous Silicate
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Chert (varietal Flint)
Silicon Dioxide (SiO2)
Green Aventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Chalcedony (Commonly known as Carnelian or Agate pebble)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Quartzite
Quartzite (composed primarily of SiO2)
Quartzite (or Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
Quartzite with Iron Inclusions
Metamorphic Quartzite (SiO2 with Fe2O3 trace impurities)
Chert / Flint
Chert (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Mica in Quartz Host
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
Muscovite Mica
Muscovite / KAl2(AlSi3O10)(OH)2
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Quartzite
Quartzite (chiefly SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Green Aventurine
Silicon dioxide (SiO2) with Fuchsite inclusions
Quartzite Pebble
Quartzite (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Quartzite
Quartzite (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Aventurine (Green Quartz)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Tektite (Indochinite)
Tektite (SiO2 + Al2O3, Glassy Melts)
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)