Metamorphic Rock (For Both Nephrite And Jadeite)

Quartz Pebble (Citrine-colored or Stained Quartz)

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Pyrite (on Quartz/Host Rock)

Iron Sulfide (FeS₂)

Copper-bearing Mica Schist

Mica Schist with Native Copper inclusions

Unakite

Unakite (Altered Granite)

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Banded Chalcedony (Agate)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Wishing Stone with Quartz Vein

Hydrothermal Quartz Vein in Metasedimentary Matrix (primarily SiO2)

Quartzite Cobble

Quartzite (primarily SiO2)

Greenschist

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Quartzite

Quartzite (SiO2)

Green Aventurine (Green Quartzite)

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

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite with Hematite

Metamorphosed Quartz Sandstone (SiO2 with Fe2O3 inclusions)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine Quartz Pebble)

Silicon Dioxide (SiO2)

Quartz (specifically Milky/Gray Quartz)

Silicon Dioxide (SiO2)

Green Schist

Greenschist (composed of Chlorite, Actinolite, and Epidote)

Greenschist

Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)

Gneiss

Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Serpentine

Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4

Mica Schist

Schist (Biotite/Muscovite rich)

Tiger's Eye (Unpolished)

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Quartzite (Potentially Ferruginous)

Quartzite (SiO2)

Yellow Quartzite (Iron-Stained Quartz)

Quartzite (SiO2 with Fe-oxide impurities)

Serpentine (Serpentinite)

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Jasper in Quartzite (likely Cinnabar or Iron inclusions)

Silicon dioxide (SiO2) with impurities

Lapis Lazuli

Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Quartzite Pebble

Quartzite (principally SiO2)

Quartzite

Quartzite (primarily SiO2)

Slate

Foliated Metamorphic Rock (composed mainly of Quartz, Illite, and Chlorite)

Anthracite Coal

Anthracite (Carbon-based metamorphic rock, 86-97% C)

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)