Synthetic (Ceramic)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz (Milky/Rose Quartz variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Blue Kyanite

Kyanite (Al2SiO5)

Quartzite (River-worn Shiner)

Quartzite (Formula: SiO2)

Bull Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Crystal Cluster)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Chert (specifically Brown Chert or Flint)

Cryptocrystalline Quartz (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Quartz (Milky/Common variety)

Silicon Dioxide (SiO2)

Milky Quartz (Tumbled/Water-worn)

Silicon Dioxide (SiO2)

Pink Quartzite

Quartzite (primarily SiO2)

Massive Quartz (Milky or Gray)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Shale

Fissile Clay-dominant Mudrock (SiO2, Al2O3, K2O, Na2O, CaO, MgO)

Chert (often colloquially referred to as Flint)

Chert (Cryptocrystalline Quartz, SiO2)

Dumortierite Quartz

Al7BO3(SiO4)3O3 (Borosilicate mineral/Quartz inclusion)

Quartzite

Quartzite (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Kyanite (Blue Kyanite)

Kyanite (Al2SiO5)

Quartz (Milky Quartz pebble)

Silicon Dioxide (SiO2)

Quartz (specifically Milky/White Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (or Bull Quartz)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Chert (varieties: Flint or Chalcedony)

Microcrystalline Quartz (SiO2)

Lepidolite

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

Chert (variations include Flint or Jasper)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Flint (variety of Chert)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)