Synthetic (Ceramic)

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2) matrix

Red Ochre (Hematite-rich Clay)

Limonitic/Hematitic Claystone (Fe2O3 with clay minerals)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Chert (often called Flint in various colors)

Silicon Dioxide (SiO2)

Orthoclase Feldspar (Sunstone variety)

KAlSi3O8 (Potassium Aluminum Silicate)

Quartzite Pebble

Meta-quartzite

Quartzite

Quartzite (mainly SiO2)

Quartzite

Quartzite (primarily SiO2)

Lepidolite in Quartz (or Lepidolite Ore)

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Quartz (SiO2)

Quartzite

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Schist (Kyanite Schist)

Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)

Flint / Chert

Silicon dioxide (SiO2)

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Red Quartzite

Quartzite (primarily SiO2)

Chert (specifically Flint or Common Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variations include Flint or Jasper)

Chert (Silicon Dioxide, SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Flint (Chert)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Mica

Silicon Dioxide (SiO2) with Muscovite Mica [KAl2(AlSi3O10)(OH)2]

Milky Quartz Geode or Druzy Quartz

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphic Quartz (SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Lepidolite

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milk Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)