Pumice
Pumice (volcanic glass)
igneous
Category
Glass
Browse glass specimens identified by the Rock Identifier community.
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Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Fulgurite
Luechatelierite (SiO2 glass)
mineraloid
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Perlite (Unexpanded)
Amorphous volcanic glass
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Black Obsidian
Volcanic Glass (SiO2)
igneous
Black Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian with Matrix
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Pumice
Pumice (volcanic glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (volcanic glass)
Igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Pumice
Vesicular volcanic glass
igneous
Pumice
Vesicular volcanic glass
igneous
Obsidian
Obsidian (volcanic glass)
igneous
Slag Glass
Amorphous Silica Glass (with metal oxide inclusions)
Mineraloid / Industrial Waste
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Sea Glass
Amorphous Silica (Anthropogenic glass) - SiO2
mineral
Slag Glass
Amorphous Silicate (Man-made)
industrial byproduct
Slag Glass
Glassy Silicate Residue
industrial byproduct
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral