Sandstone (Quartzite-rich)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Category
Manufactured Glass (Simulant)
Browse manufactured glass (simulant) specimens identified by the Rock Identifier community.
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Sandstone
Arenite (primarily SiO2)
sedimentary
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Quartz Pebble (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
sedimentary
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Sand Grain (Silica/Quartz Grain)
Silicon Dioxide (SiO2)
sedimentary
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Man-made)
mineraloid
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue glass-like tumbled specimen
Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Cullet Glass (Strawberry Glass)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Mineraloid (Synthetic/Man-made)
Smoky Quartz with Feldspar
Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Blue Goldstone
Aventurine Glass
Man-made glass (often grouped with minerals in lapidary)
Quartz (Grain)
Silicon Dioxide (SiO2)
mineral
Blue Goldstone
Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)
Synthetic (Man-made Glass)
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Limestone
Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Clastic Rock
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
K-Feldspar / Granite Pegmatite
Potassium Feldspar (Microcline/Orthoclase) with Quartz
igneous
Sandstone
Sedimentary quartz arenite
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral