Metamorphic

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)

Quartzite with inclusions

Quartzite (SiO2)

Schist

Mica Schist

Quartzite

Quartzite (composed primarily of SiO2)

Serpentinite

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

Pink Quartzite

Quartzite (SiO2 with minor iron oxide impurities)

Quartzite Pebble

Quartzite (principally SiO2)

Zebra Jasper

Silicon Dioxide (SiO2) with iron oxide and manganese inclusions

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Soapstone (Talc Schist)

Steatite

Unakite (or Epidotized Granite)

Epidotized Granite (Composition: KAlSi3O8, Ca2(Al,Fe)3(SiO4)3(OH), SiO2)

Healer's Gold (Pyrite/Magnetite in Serpentine)

Magnetite (Fe3O4) and Pyrite (FeS2) in Lizardite/Antigorite [Mg3Si2O5(OH)4]

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

Blue Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Nephrite Jade

Nephrite (a variety of the Calcium magnesium iron silicate mineral series Actinolite), Ca2(Mg, Fe)5Si8O22(OH)2

Unakite

Epidotized Granite