Mineral And Metamorphic Rock

Quartzite

Quartzite (primarily SiO2)

Yellow Quartzite (Tumbled)

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Lapis Lazuli

Lapis Lazuli (Metamorphic rock containing lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, calcite, and pyrite)

Quartzite

Quartzite (primarily SiO2)

Yellow Quartzite

Metamorphosed Quartz (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite with Iron Inclusions

Quartzite (primarily SiO2)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Ruby

Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)

Garnet (likely Almandine or Pyrope)

Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is cryptocrystalline quartz). Chemical Formula: SiO2 with inclusions of crocidolite fibers.

Yellow Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

River Pebble (Likely Quartzite or Chert)

Quartzite (primarily SiO2)

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2 with iron oxide inclusions)

Quartzite Pebbler

Quartzite (SiO2)

River Cobble (Quartzite)

Meta-orthoquartzite

Red Quartzite Slipper Stone

Quartzite (SiO2)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Orthoclase Feldspar (or K-Feldspar)

Orthoclase (KAlSi3O8)

Mica Schist

Mica Schist

Serpentinite

Serpentinite (composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite)

Demantoid Garnet on Matrix

Demantoid (variety of Andradite Garnet) - Ca3(Fe3+)2(SiO4)3

Mica Schist (with Golden/Biotite inclusions)

K(Mg,Fe)3AlSi3O10(F,OH)2 (Biotite), KAl2(AlSi3O10)(F,OH)2 (Muscovite)

Unakite

Unakite (Altered Granite consisting of Orthoclase KAlSi3O8, Epidote Ca2(Al,Fe)3(SiO4)3(OH), and Quartz SiO2)

Jasper with Epidote Vein

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

Iron-stained Quartzite

Metamorphic Quartz (SiO2) with limonite/hematite staining

Quartzite Pebble

Quartzite (composed primarily of Silica, SiO2)

Yellow Quartzite

Quartzite (primarily SiO2)

Quartzite (River Stone)

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

River Pebble (Quartzite/Chert)

Quartzite with inclusions (SiO2)

Unakite

Unakite (Epidotized Granite)

Serpentine (Nephrite-like Serpentine)

Serpentinite (Hydrous magnesium iron phyllosilicate)

Quartzite

Quartzite (SiO2)

Unakite

Epidotized Granite

Serpentine

Antigorite / Lizardite / Chrysotile mix; (Mg, Fe)3Si2O5(OH)4

River Rock (Quartzite)

Quartzite (SiO2)

Unakite

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

White Sapphire

Corundum (Al2O3)

Quartzite Pebble (River Rock)

Quartzite (mainly SiO2)