Metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Pink Quartzite

Quartzite (SiO2)

Jasper in Quartzite (likely Cinnabar or Iron inclusions)

Silicon dioxide (SiO2) with impurities

Quartzite (River Cobble)

Metamorphosed Quartz Sandstone (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Anthracite Coal

Anthracite

Quartzite (River Pebble)

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Granitic Gneiss

Gneiss (Polymetamorphic Granitic Gneiss)

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Riverstone Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite

Metamorphosed Sandstone (Mainly SiO2)

Unakite

Epidotized Granite (Composed of Orthoclase Feldspar, Epidote, and Quartz)

Quartzite

Quartzite (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Mica Schist

Crystalline Schist (often primarily Muscovite or Biotite sheet silicates)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

River Rock (likely Quartzite or Quartz-rich Siltstone)

Quartzite (SiO2)

Unakite or Epidosite

Epidosite (Mineral composition: Epidote, Feldspar, and Quartz)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Serpentine

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Wishing Stone

Greenschist or Basalt with Quartz/Calcite Vein

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Garnet Schist

Garnetiferous Mica Schist

Tiger's Eye

SiO2 (Pseudomorph of Quartz after Crocidolite)

Serpentinite

Serpentinite (complex silicate minerals including Lizardite, Antigorite, and Chrysotile)

Petrified Wood

Silicified wood (Quartz, SiO2)

Limonitic Quartzite

Metamorphosed sandstone with Limonite (FeO(OH)·nH2O) staining

Dragon Blood Jasper

Epidote with Red Jasper inclusions (SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Quartzite (Gold/Tan River Cobble)

Quartzite (composed primarily of crystalline SiO2)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

Quartzite pebble

Quartzite (SiO2)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Mica Schist

Mica Schist (primarily composed of Muscovite, Biotite, and Quartz)

Quartzite Pebble

Quartzite (primarily SiO2)

Serpentine

Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Tiger's Eye

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