Metamorphic Or Igneous Alteration

Quartz with Chlorite or Hornblende inclusions

Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Garnet in Matrix (Eclogite)

Eclogite, featuring Almandine or Pyrope Garnet [X3Y2(SiO4)3]

Schist

Mica Schist

Schist

Mica Schist (predominantly Muscovite/Biotite)

Mica Schist

Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite (River Cobble)

Metamorphic Quartz-rich Rock

Quartzite (or Milky Quartz pebble)

Quartzite (Metamorphosed Sandstone) / Silicon Dioxide (SiO2)

Almandine Garnet in Matrix

Almandine Garnet (Fe3Al2(SiO4)3) in Schist/Quartz Matrix

Nuummite

Nuummite (Ortho-amphibole rock, primarily Anthophyllite and Gedrite)

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite mica

Picasso Stone

Metamorphic Limestone (Marble)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

Tiger's Eye

Pseudomorph of Quartz (SiO2) after Crocidolite

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite

Prase or Green Quartz

Silicon Dioxide (SiO2 with actinolite or chlorite inclusions)

Pyrite in Shale

Iron Sulfide (FeS2)

Quartzite pebble

Metamorphic rock (mainly SiO2)

Garnet in Schist (Polished Tower)

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

Milky Quartz

Silicon Dioxide (SiO2)

Mica Schist

Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)

Serpentine

Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4

Pyrite (Fool's Gold) in Matrix

Iron Sulfide (FeS2)

Amazonite

KAlSi3O8 (Potassium aluminum silicate - blue-green variety of Microcline)

Mica Schist with Garnet inclusions

Mica Schist (primarily Muscovite and Biotite - KAl2(AlSi3O10)(OH)2)

Quartzite

Quartzite (SiO2)

Iolite (Cordierite)

Cordierite (Magnesium iron aluminum cyclosilicate), Mg2Al4Si5O18

Schist/Phyllite

Metamorphic Schist (Chlorite Schist variety)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Quartzite (River Pebble)

Metamorphic Quartzite (SiO2)

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Kyanite (Blue Kyanite)

Kyanite (Al2SiO5)

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))

Serpentinite

Serpentinite (group of minerals: Antigorite, Lizardite, Chrysotile)

Jadeite Jade

Sodium Aluminum Silicate (NaAlSi2O6)

Orange Calcite

Calcium Carbonate (CaCO3)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4

Pyrite

Iron Sulfide (FeS2)

Quartzite River Rock

Quartzite (primarily SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)