Manufactured Glass (Simulant)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartzite

Metamorphosed Quartz Sandstone (primarily SiO2)

Quartz (Milky/Opaque variety)

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz with Epidote or Chlorite inclusions

Silicon Dioxide (SiO2) with inclusions of Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Carved Merkaba)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Cobble

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO₂)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite

Quartzite (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Crystalline Quartz (Rough)

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based with quartz grains)

Quartz Geode Pebble

Silicon Dioxide (SiO2)

Quartzite (Milky Quartz pebble)

Silicon Dioxide (SiO2)

Sandstone with Quarzite clasts

Arenite (SiO2 based)

Quartzite (Gold-Yellow variety)

Quartzite (Silicon Dioxide, SiO2)

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with Fe2O3 cement)

Sandstone (likely Quartzose Sandstone pebble)

Arenite (primarily SiO2)

Quartz / Iron-Stained Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions/staining

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Sandstone (Quartz-rich)

Arenite (SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Iron Oxide staining)

Quartzite

Quartzite (SiO2)

Sandstone

Arenite (Clastic Sedimentary Rock)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Sandstone

Arenite (Clastic Sedimentary Rock)

Jasper (Iron-stained Quartz)

Silicon Dioxide (SiO2) with iron oxide inclusions

Sandstone

Arenite

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with Fe2O3)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Chert (specifically Flint or Gray Chert)

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)