Sedimentary And Metamorphic

Travertine

Terrestrial Sedimentary Limestone (CaCO3)

Magnetite

Magnetite (Fe3O4)

Almandine Garnet in Schist

Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Milky Quartz

Silicon dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Gneiss

Metamorphic Gneiss

Pyrite

Iron Sulfide (FeS2)

Quartz

Silicon Dioxide (SiO2)

Pyrite in Matrix (Fool's Gold)

Iron Disulfide (FeS2)

Quartz (Pebble)

Silicon Dioxide (SiO2)

Quartz Crystal Rock

Silicon Dioxide (SiO2)

Yellow Calcite

Calcium Carbonate, CaCO3

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Faceted)

SiO2 - Silicon Dioxide

Faceted Clear Quartz or Diamond Simulant

Silicon Dioxide (SiO2) if Quartz or Cubic Zirconia (ZrO2) if Synthetic

Galena

Lead(II) sulfide (PbS)

Pyrite

Iron Disulfide (FeS2)

Blue Kyanite

Kyanite (Al2SiO5)

Magnetite / Ironstone

Magnetite (Fe3O4)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Galena

Lead Sulfide (PbS)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Crystal

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Pink Quartz

Silicon Dioxide (SiO2)

Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)

FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)

Pyrite Nodule

Iron Sulfide (FeS2)

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Yellow Calcite

Calcite (CaCO3)

Quartz (Agate/Jasper pebble)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar group)

Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Pyrite (Fools Gold)

Iron Disulfide (FeS2)

Quartz (Milky/Snow)

Silicon Dioxide (SiO2)

Pyrite in Matrix

Iron Disulfide (FeS2)

Blue Apatite

Fluoroapatite (Ca5(PO4)3F)