Metamorphic Mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Aventurine (Green Quartz)

Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)

Smoky Quartz (Tumbled)

Smoky Quartz (Silicon Dioxide - SiO2)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Ruby (Corundum)

Aluminum Oxide (Al2O3) with Chromium traces

Clear Quartz

Silicon Dioxide (SiO2)

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Quartz (Milky Quartz with Iron Staining)

Silicon Dioxide (SiO2)

Slate

Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)

Schist

Mica Schist (Medium-grade Metamorphic Rock)

Green Aventurine

Quartz (SiO2) containing Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Gneiss

Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)

Soapstone / Steatite

Steatite (primarily Talc, Mg3Si4O10(OH)2)

Magnetite (likely in Hematite or Ironstone)

Magnetite (Fe3O4)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon dioxide (SiO2)

Chalcopyrite

Chalcopyrite (CuFeS2)

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Nuummite

Nuummite (intergrowth of orthoamphiboles Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartzite with inclusions

Quartzite (SiO2)

Milky Quartz Vein with Iron Staining

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Greenschist (Chlorite Schist)

Greenschist (containing chlorite, actinolite, and epidote)

Quartz Pebble (Water-worn Quartzite)

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2 with iron inclusions)

Agatized Petrified Wood

Silicon Dioxide (SiO2) - Chalcedony pseudomorph after Wood

Schist

Mica Schist (contains muscovite/biotite and quartz)

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Diorite (Gneissic)

Diorite

Peacock Ore (Chalcopyrite/Bornite)

Bornite (Cu5FeS4) or iridescent treated Chalcopyrite (CuFeS2)

Labradorite

Labradorite (Ca, Na)(Al, Si)4O8

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Biotite (Black Mica)

Biotite [K(Mg,Fe)3(AlSi3O10)(F,OH)2]