Man Made Metamorphic Style Composite

Quartzite (Gold/Yellow)

Quartzite (SiO2)

Yellow Quartzite Pebble

Quartzite (SiO2)

Blue Kyanite

Kyanite (Al2SiO5)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Ruby (in costume jewelry context)

Corundum (Al2O3) with Chromium impurities

Coarse Sand Grain / Lithic Fragment

Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)

Mixed Mineral Specimens

Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)

Yellow Calcite

Calcium Carbonate (CaCO3)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Granite

Plutonic felsic igneous rock

Granite

Granite (Felsic Plutonic Rock)

Rhodonite beads (possibly dyed or treated, or lower quality Rhodonite)

Manganese inosilicate, (Mn,Fe,Mg,Ca)SiO3

Biotite Mica

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

Quartzite

Quartzite (primarily SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Magnetite (Lodestone variety)

Magnetite (Iron(II,III) oxide, Fe3O4)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Corundum (Sapphire/Ruby in Matrix)

Aluminium oxide (Al2O3)

Peacock Ore

Bornite (Cu5FeS4)

Yellow Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Serpentine (Serpentinite)

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

Serpentine (Serpentinite)

Antigorite, Lizardite, and Chrysotile: (Mg,Fe)3Si2O5(OH)4

Quartzite (Lithic Artifact)

Quartzite (SiO2)

Picasso Jasper (or Picasso Marble)

Metamorphosed Limestone (Calcium Carbonate, CaCO3, with impurities)

Serpentinite

Serpentinite (composed primarily of mineral group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)

Serpentinite

Serpentinite (composed primarily of serpentine group minerals like lizardite, chrysotile, or antigorite; Mg3Si2O5(OH)4)

Serpentinite

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

Serpentine (Serpentinite)

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

Eclogite garnet in matrix

Eclogite (Garnet-Omphacite rock)

Serpentine

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

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Schist

Mica Schist (Quartz-Muscovite-Biotite Schist)

River Quartzite Spheroid

Recrystallized Orthoquartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (chiefly SiO2)

Marble

Recrystallized Calcite (CaCO3)

Quartzite Pebble

Quartzite (primarily SiO2)