Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Category
Glass
Browse glass specimens identified by the Rock Identifier community.
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Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic Glass (Amorphous SiO2)
igneous
Gold Sheen Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Pumice
Pumice (a vesicular volcanic glass)
igneous
Pumice
Pumice (Amorphous volcanic glass)
igneous
Black Obsidian
Amorphous volcanic glass (SiO2)
igneous
Tumbled Obsidian
Volcanic Glass (Silicon Dioxide)
igneous
Apache Tear
Obsidian (Hydrated Silica Glass)
igneous
Black Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Obsidian
Volcanic Glass (Amorphous Silica)
igneous
Goldstone (Red)
Aventurine Glass (SiO2 + Cu)
Synthetic Glass (Often categorized as a simulated mineral)
Rainbow Obsidian
Volcanic Glass (SiO2 + impurities)
Igneous
Tektite (Indochinite)
Impact Glass (SiO2 + Al2O3)
mineraloid
Tektite (Indochinite)
Tektite (Amorphous Meteoritic Glass)
igneous
Obsidian
Volcanic Glass (Amorphous Silica)
igneous
Scoria
Scoria (Vesicular Basaltic Glass)
Igneous
Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Pumice
Pumicite (Amorphous Volcanic Glass)
igneous
Pumice
Pumice (a vesicular volcanic glass)
igneous
Obsidian
Obsidian (Extrusive Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Pumice
Pumice (Vesicular volcanic glass)
igneous
Obsidian
Volcanic glass (Mainly SiO2)
igneous
Obsidian
Volcanic Glass (SiO2 rich)
igneous
Pumice
Pumice (Vesicular volcanic glass)
Igneous
Mahogany Obsidian
Volcanic Glass (SiO2 + Fe2O3)
igneous
Pumice
Pumice (Vesicular Felsic Glass)
igneous
Black Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Obsidian
Volcanic Glass (SiO2 rich)
Igneous