Antropogenic (Man Made Glass Byproduct)

Yellow Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Hydrothermal Quartz (SiO2) in Slates/Schists

Pyrite

Iron Sulfide (FeS2)

Sandstone (with Manganese staining)

Arenite (composed primarily of SiO2)

Sandstone

Arenite (SiO2 principal)

Quartzite pebble

Quartzite (SiO2 based)

Likely basalt pebble

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine

Peridot

Olivine ((Mg, Fe)2SiO4)

Olivine (Peridotite)

Olivine Group; (Mg, Fe)2SiO4

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartzite

Metamorphic Quartz Sandstone

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite river stone

Quartzite (SiO2)

White Quartz

Silicon Dioxide (SiO2)

White Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Pegmatite (Quartz with Tourmaline/Biotite inclusions)

Igneous Pegmatite

Quartz / Quartzite

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Sandstone (Ferruginous)

Arenite (with Iron Oxide cement)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Milky Quartz Pebble with Matrix

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based)

Quartzite with Milky Quartz Vein

Metamorphosed Quartz-rich Rock (SiO2)

Sandstone Pebble

Sandstone (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)