Sedimentary Or Metamorphic

Red Quartzite River Pebble

Quartzite (SiO2 with iron oxide inclusions)

Quartzite (River Cobble)

Metamorphosed Quartz Sandstone (SiO2)

Lapis Lazuli

Lapis Lazuli (Aggregate of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Pyrite, and Calcite)

Pink Quartzite

Quartzite (primarily SiO2)

Tiger's Eye

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

Nephrite Jade (Pounamu)

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

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Mica Schist

Mica Schist (Predominantly Muscovite/Biotite)

Quartzite

Quartzite (mostly SiO2)

Quartzite

Quartzite (primarily SiO2)

Banded Quartzite River Pebble

Metamorphosed Quartz-rich Sandstone (SiO2)

Quartzite

Quartzite (SiO2)

Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Wishing Stone (Quartz-Veined Pebble)

Hydrothermal Quartz in Metasedimentary Matrix (SiO2/Matrix)

Lapis Lazuli

Complex rock primarily of Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2), with Pyrite and Calcite

Quartz / Quartzite

Quartz (Silicon Dioxide, SiO2)

Quartzite River Rock

Quartzite (primarily SiO2)

Quartzite

Quartzite (composed primarily of SiO2)

Iron-stained Quartzite

Recrystallized Quartz (SiO2) with Hematite/Limonite staining

Quartzite

Quartzite (primarily SiO2)

Unakite

Unakite (Epidotized Granite)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (Silicon Dioxide: SiO2)

Lapis Lazuli

Complex mixture containing Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite

Schist

Mica Schist

Serpentine (Nephrite-like Serpentine)

Serpentinite (Hydrous magnesium iron phyllosilicate)

Quartzite with Quartz Vein

Metamorphosed Quartz-rich Arenite (SiO2)

Quartz Pebble (Water-worn Quartzite)

Silicon Dioxide (SiO2)

Quartzite with Hematite staining

Quartzite (SiO2) with iron oxide inclusions

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Anthracite Coal

Anthracite (Carbon-rich mineraloid)

Lapis Lazuli

Lapis Lazuli (Complex silicate mixture containing Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Quartzite Pebble

Quartzite (primarily SiO2)

Yellow Quartzite (River Stone)

Quartzite (composed primarily of Quartz: SiO2)

Yellow Jade (Nephrite or Quartzite variety)

Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite) / SiO2 (Quartzite variant)

Quartzite Pebble

Recrystallized Silicon Dioxide (SiO2)

Lapis Lazuli

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

Quartzite

Quartzite (primarily SiO2)

Tiger's Eye

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

Quartzite (Water-worn Pebble)

Metamorphosed Quartz Sandstone (SiO2)