Sedimentary Or Metamorphic

Quartzite Pebbles

Quartzite (SiO2)

River Quartz / Quartzite Pebbles

Quartzite (primarily Silicon Dioxide, SiO2)

Lapis Lazuli

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

Lapis Lazuli

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

Quartzite

Quartzite (SiO2)

Quartzite (River-worn Cobble)

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (SiO2)

Greenstone / Epidosite

Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Tiger's Eye (Golden and Blue Pietersite mix)

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Quartzite

Quartzite (Primary mineral: Quartz, SiO2)

Quartzite

Quartzite (SiO2)

Quartzite Cobble

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite Pebble

Meta-quartzite

Quartzite

Quartzite (primarily SiO2)

Unakite

Epidotized Granite

Schist

Mica Schist (Quartz-Muscovite-Biotite Schist)

Quartzite

Quartzite (primarily SiO2)

Quartzite (Sugar Quartz)

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)

Quartzite

Quartzite (SiO2)

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)

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Anthracite Coal

Anthracite (Carbon)

Quartzite

Quartzite (primarily SiO2)

Green Quartzite (Aventurine variety)

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Quartzite Pebble

Quartzite (primarily SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

River Quartzite Spheroid

Recrystallized Orthoquartzite (SiO2)