Synthetic Glass

Sandstone

Clastic sedimentary rock (primarily quartz arenite)

Quartz pebble

Silicon dioxide (SiO2)

Sandstone

Sedimentary rock composed mainly of sand-sized minerals or rock grains

Quartzite

Metamorphic Quartz Rock (SiO2)

Quartz

Silicon Dioxide (SiO2)

White quartz pebble

Quartz (silicon dioxide, SiO₂)

Sandstone

Sedimentary Clastic Rock (Quartz arenite)

Sandstone

Sedimentary Rock (Quartz arenite or arkose)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Weathered Pebble)

Sedimentary Rock (Quartz arenite)

Sandstone

Sandstone (SiO2-rich detrital sedimentary rock)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone

Arenite

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite river stone

Quartzite (SiO2)

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

White Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone

Sandstone (Siliciclastic Sedimentary Rock)

Potassium Feldspar (Orthoclase / Microcline)

KAlSi3O8 (Potassium Aluminum Silicate)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Sand

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Sedimentary Sandstone with Iron Oxide

Ferruginous Sandstone

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Sandstone

Arenite (SiO2 primarily)

Milky Quartz

Quartz (SiO2)

Sandstone (Iron-stained)

Arenite (primarily SiO2 with Fe2O3 staining)

Quartz Pebble

Crystalline Silica (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Banded)

Arenite (primarily SiO2)