Manufactured Glass

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2) / Rock Crystal

Chert / Flint

Silicon Dioxide (SiO2)

Quartzite with Pyrite Inclusions

Metamorphic Quartz-rich Rock

Quartz Pebble

Silicon Dioxide (SiO2)

Chakra Stone Bracelet (mixed gemstones)

Multi-mineral/Gemstone assembly (primarily Quartz variety beads)

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Quartz (Rose Quartz or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Bull Quartz with Mica and Host Rock

Massive Quartz (SiO2) with Muscovite/Chlorite inclusions

Colorless Quartz (Rhinestone)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

River Cobble (likely Quartzite)

Metamorphosed Sandstone (SiO2)

Chert

Chert (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz pebble with iron stains

Macrocrystalline Quartz (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Quartzite (mostly SiO2)

Quartz (Variety: Rock Crystal Cluster)

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Muscovite Mica (on Quartz Matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Quartz

Silicon Dioxide (SiO2)

Sandstone

Sedimentary Rock (Quartzose Sandstone)

Lepidolite

K(Li,Al)3(Si,Al)4O10(F,OH)2

Quartz Pebble

Silicon dioxide (SiO2)

Sandstone

Clastic Sedimentary Rock

Sandstone

Sandstone (SiO2 dominant)