Milky Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Category
Man Made Glass
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Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
igneous
Quartz with Chlorite or Epidote inclusions
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
mineral
Obsidian / Volcanic Glass
Obsidian (principally SiO2, usually 70% or more)
igneous
Clear Quartz Crystal (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Flint/Novaculite)
Microcrystalline Quartz (SiO2)
sedimentary
Obsidian with Spherulitic Devitrification (Snowflake Obsidian/Mahogany related)
Volcanic Glass (70% or more SiO2)
igneous
Obsidian
Obsidian (volcanic glass)
igneous
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Iron oxide inclusions)
sedimentary
Quartzite
Quartzite (SiO2 silicon dioxide)
metamorphic
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Rose Quartz
Quartz (SiO₂), specifically a variety of Quartz
Mineral
Quartzite Cobble
Quartzite
metamorphic
Quartz (Milky or Smoky variant)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Obsidian
Obsidian (Volcanic Glass)
igneous
Quartzite Pebble (with Quartz veins)
Quartzite (SiO2)
metamorphic
Agate
SiO2
Mineral
River Quartzite (Water-worn Quartzite)
Quartzite (primarily SiO2)
metamorphic
Ferruginous Quartz
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
mineral
Granite
Granite (Phaneritic Quartz-Feldspar Plutonic Rock)
igneous
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Quartzite
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Granodiorite
Granodiorite
Igneous
Nephrite Jade
Nephrite
Mineral/Rock
Slag (Industrial Glass/Byproduct)
Anthropogenic Vitreous Silicate
igneous (anthropogenic)
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Green Fluorite
Calcium fluoride (CaF2)
mineral
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Limestone with Calcite Crystals
Calcium Carbonate (CaCO3)
sedimentary
Ferruginous Sandstone
Sandstone, Iron-rich
sedimentary
Sandstone (likely Graywacke or Arkosic varieties)
Arenite (composed primarily of SiO2)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Amber
Succinite (with a generalized formula of C10H16O)
mineral
Snowflake Obsidian
Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)
Igneous