Sedimentary And Igneous (Mixed)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Clear Quartz

Silicon Dioxide (SiO2)

Chalcedony

Silicon Dioxide (SiO₂)

Chalcedony (Common Agate)

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky and Bull Quartz)

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Hematite

Iron(III) oxide (Fe2O3)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Calcite

Calcite (CaCO₃)

Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)

Calcite

Labradorite (a variety of Feldspar)

Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)

Quartz

Quartz (SiO2)

Quartz

Silicon Dioxide (SiO2)

Magnetite

Magnetite (Fe3O4)

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Optical Calcite (Iceland Spar)

Calcium Carbonate (CaCO3)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Pyrite (Fools Gold)

Iron Sulfide (FeS2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Blue Apatite

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

Pyrite

Iron Disulfide (FeS2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Agate (specifically a small Chalcedony nodule)

Agate (Cryptocrystalline variety of Quartz, SiO2)

Gneiss (specifically a water-worn pebble)

Gneiss

Yellow Calcite

Calcium Carbonate (CaCO3)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (complex metamorphic silicate rock)

Quartz

Silicon Dioxide (SiO2)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Gneiss

High-grade metamorphic rock (Gneiss)

White Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2