Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Cloudy Quartz

Quartz (Silicon Dioxide, SiO2)

Pyrite (locally known as Fool's Gold)

Iron Sulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Ruby (Corundum)

Al2O3 (Aluminium oxide with Chromium impurities)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)

Quartz (SiO₂ - Silicon Dioxide)

Orange Calcite

Calcium Carbonate (CaCO3)

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)

Quartz (SiO₂)

Red Garnet

Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)

Ruby Zoisite

Anyolite (Composition of Green Zoisite, Black Tschermakite, and Red Corundum)

Garnet (Almandine)

Almandine, Fe3Al2Si3O12

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Gneiss (with Mica and Quartz)

Gneissic Metamorphic Rock

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Clear Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Orthoclase Feldspar (Twinning Specimen)

Orthoclase (KAlSi3O8)

Labradorite

Labradorite (Plagioclase Feldspar Series - (Ca, Na)(Al, Si)4O8)

Clear Quartz

Silicon dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz (likely Rose Quartz or Milky Quartz based on color)

Quartz (SiO2 - Silicon Dioxide)

Orange Calcite

Calcium Carbonate (CaCO3)

Amazonite

Amazonite (KAlSi3O8) - a variety of Microcline Feldspar

Pyrite (or Fool's Gold)

Pyrite (FeS₂)

Sodalite

Na8(Al6Si6O24)Cl2

Mixed Gemstone Bracelet

Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)

Gneiss

Gneissic Metamorphic Rock

Native Gold (in the form of jewelry)

Gold (Au)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Quartz (in a rock matrix)

Quartz (SiO2)

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Pyrite (Iron Pyrite)

Iron Sulfide (FeS2)

Almandine Garnet

Almandine - Fe3Al2(SiO4)3

Granite Gneiss

Gneiss (High-grade regional metamorphic rock)

Pyrite

Iron Disulfide (FeS2)

Magnetite (Small Granule)

Magnetite (Fe3O4)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)