Manufactured Glass

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Red Sandstone / River Stone)

Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)

Quartz (specifically Milky/Yellow Quartz)

Silicon Dioxide (SiO2)

Sandstone (likely Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone

Arenite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Quartzite (with Metamorphic Foliation)

Quartzite (Recrystallized SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (likely Arkosic or Lithic Sandstone)

Arenite (SiO2 based with mineral inclusions)

Sandstone

Arenite

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Rose or Clear variety)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Sandstone

Arenite (SiO2 primarily)

Milky Quartz (with Iron Oxide staining)

Silicon Dioxide (SiO2)

Quartzite pebble

Quartzite (SiO2)

River Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky Quartz/Citrine Type)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz / Quartzite

Silicon Dioxide (SiO2)

Milky Quartz (with Chlorite/Mineral Inclusions)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Gray Quartz (Tumbled)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Sandstone (Red)

Arenite (primarily Quartz, SiO2, with Iron Oxide cement)

Quartzite Pebble

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (chiefly SiO2)

Quartz (Crystal Point/Fragment)

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Potassium Feldspar (Orthoclase)

KAlSi3O8

Quartzite

Quartzite (principally SiO2)

Sandstone

Arenite (composed primarily of Quartz, SiO2)