Manufactured Glass

Sandstone

Clastic Sedimentary Rock

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartzite

Metamorphic Quartz (SiO2)

Sandstone

Sedimentary Rock (Quartz Sandstone)

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone

Sedimentary Rock (Quartz arenite)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Geode or Vein Quartz

Silicon Dioxide (SiO2)

Sandstone

Clastic Sedimentary Rock

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Sandstone

Quartz Arenite / Clastic Sedimentary Rock

Quartz Pebble

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide - SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite Pebbles

Quartzite (SiO2)

Quartz (Druzy)

Silicon Dioxide (SiO2)

Sandstone

Arenite

Quartzite Pebble

Quartzite (primarily SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Sandstone (Quartzose)

Arenite (SiO2 based)

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)

Sandstone (Stream Pebble)

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Potassium Feldspar and Quartz

KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)

Sandstone (Quartzose Pebble)

Arenite (composed primarily of SiO2)

Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Sandstone

Sandstone (Sedimentary rock composed of silicate grains)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Smoky/Milky variant)

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based)