Igneous Or Sedimentary (Anthropogenic Modification)

Quartz Chip

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or Smoky)

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH)

Chalcedony (Grey/White Agate)

Silicon Dioxide (SiO₂)

Clear Quartz

Silicon Dioxide (SiO2)

Pink Granite Gneiss

Granitic Gneiss

Pyrite (on Quartz matrix)

Iron Disulfide (FeS2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Magnetite

Magnetite (Fe3O4)

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold) in Matrix

Iron Sulfide (FeS2)

Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Yellow Chalcedony (Agate/Jasper mix)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Healer's Gold (Pyrite and Magnetite in Schist)

Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Quartz

Silicon dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Magnetite

Magnetite (Fe3O4)

Calcite

Calcium Carbonate (CaCO3)

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Ruby Zoisite

Anyolite (Ca2Al3(SiO4)3(OH) + Al2O3:Cr)

Clear Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

White Quartz

Silicon Dioxide (SiO2)

Quartz (Milk/Citrine variety)

Silicon Dioxide (SiO2)

Pyrite

Iron Disulfide (FeS2)