Metamorphic Or Igneous

Quartzite Cobble

Quartzite (primarily SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite Pebble

Quartzite (SiO2)

Quartzite Pebble

Quartzite (SiO2)

Green Aventurine

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

Quartzite

Quartzite (90%+ SiO2)

Yellow Jade (Nephrite or Quartzite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jade-colored Quartzite (SiO2)

Pink Quartzite

Quartzite (SiO2 with iron oxide impurities)

Quartzite

Quartzite (SiO2)

Quartzite (specifically a river-worn cobble)

Quartzite (primarily Silicon Dioxide, SiO2)

Yellow Quartzite or Yellow Jasper

Quartzite (primarily SiO2 with Iron oxide staining)

Quartzite

Quartzite (primarily SiO2)

Lapis Lazuli (Raw Ore)

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite component)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Serpentine

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

Quartzite Pebbler

Quartzite (SiO2)

Red Tiger's Eye

Pseudomorph of Macrocrystalline Quartz after Crocidolite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Rough Green QuartzITE / Green Aventurine

Aventurine Quartz (SiO2 + Cr-muscovite inclusions)

Quartzite

Quartzite (Primary mineral: Silicon Dioxide, SiO₂)

Quartzite

Quartzite (Primary mineral: SiO2)

Quartzite

Quartzite (primarily SiO2)

Anthracite

Anthracite Coal

Charoite

Charoite (Hydrated potassium, sodium, calcium, barium, strontium silicate hydroxide fluoride)

Lapis Lazuli

Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Green Aventurine

Silicon Dioxide (Quartz variety) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Graphite-veined Quartzite

Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)

Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Red Tiger's Eye

Silicified Crocidolite (Quartz pseudo-morph after Crocidolite), SiO2

Banded Iron Formation (BIF) / Tiger Iron

Ferruginous Chert (primarily Quartz [SiO2] and Hematite/Magnetite [Fe2O3/Fe3O4])

Nephrite Jade

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

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite

Quartzite (primarily SiO2)