Quartz
Silicon Dioxide (SiO2)
mineral
Category
Man Made Glass
Browse man made glass specimens identified by the Rock Identifier community.
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Diamond
Natural Diamond (Carbon, C)
gemstone
Agate (Bead Form)
Agate (Cryptocrystalline Quartz, SiO2)
mineral
Pink Quartzite
Quartzite (primarily SiO2)
metamorphic
Halite (Rock Salt)
Sodium Chloride (NaCl)
mineral
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Rough Quartz (likely Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Sandstone (SiO2 dominated clastic sedimentary rock)
sedimentary
Sandstone
Arenite (Sedimentary rock)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Chert
Chert (SiO2)
sedimentary
Quartzite
Quartzite (Silicon Dioxide, SiO2)
metamorphic
Sandstone Pebble
Arenite (specifically Lithic or Quartz Arenite)
sedimentary
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Metamorphic rock consisting largely of Quartz (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Lepidolite in Quartz
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 / SiO2
mineral
Potassium Feldspar
K-Feldspar (Orthoclase/Microcline), KAlSi3O8
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone (Quartzose)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose)
Arenite (SiO2 principal composition)
sedimentary
Black Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartzite
Quartzite (predominantly Silicon Dioxide, SiO2)
metamorphic
Sandstone
Arenite (SiO2 primarily)
sedimentary
Quartzite
Quartzite (mostly SiO2)
metamorphic
Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
sedimentary
Sandstone (Ferruginous Concretion)
Arenite (with iron oxide cement)
sedimentary
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite
Silicon Dioxide (SiO2)
metamorphic
Gray Limestone
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral