Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
mineral
Category
Manufactured Glass (Simulant)
Browse manufactured glass (simulant) specimens identified by the Rock Identifier community.
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Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue quartzite or blue aventurine glass-like aggregate
Quartzite, predominantly SiO₂ (identification uncertain from image)
metamorphic
Small faceted diamond-like gemstones
Likely diamond (crystalline carbon, C), but visual identification is uncertain
gemstone
Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
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 (Quartzite / Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Orthoclase Feldspar (Granitic)
KAlSi3O8 (Potassium Feldspar)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz/Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartz Vein Rock
Silicon Dioxide (SiO2)
mineral
Sandstone Pebble
Sandstone (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Quartzite Pebble
Quartzite (mostly SiO2)
metamorphic
Coarse Sand and River Gravel
Siliciclastic Sediment (primarily Quartz and Feldspar)
sedimentary
Orange Quartz
Silicon Dioxide (SiO2) with iron inclusions
mineral
Sandstone
Arenite
sedimentary
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz, SiO2)
sedimentary
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (SiO2 principal)
sedimentary
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Cluster / Quartzite
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Microcline Feldspar
KAlSi3O8
mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
metamorphic
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary