Man Made Metamorphic Style Composite

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Granite

Granite (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)

Granite

Granite (phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)

Sandstone

Arenite (composed primarily of SiO2)

Granite

Granite (Mainly Quartz, Feldspar, and Mica)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Sandstone

Arenite (SiO2 based with various mineral cements)

Sandstone

Arenite (Siliclastic sedimentary rock), SiO2 + various minerals

River Stone (likely Quartzite or Limestone)

Silicon dioxide (SiO2) or Calcium carbonate (CaCO3)

Rhodonite

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

Pink Quartz / Rose Quartz

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Greenstone / Serpentinite

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

Cream Quartz Bead

Silicon Dioxide (SiO2)

Granitoid (Granite/Gneiss mix)

Granite or Granitic Gneiss (Silicon dioxide SiO2 with Al, K, Na silicates)

Magnetite

Magnetite (Fe3O4)

Rhodolite Garnet

Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)

Pink Feldspar / Rhodochrosite (Tumbled Pink Quartzite)

SiO2 (Quartz) / KAlSi3O8 (Potassium Feldspar)

Rose Quartz

Silicon Dioxide (SiO2)

Rhodonite

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

New Jade (Serpentine)

Antigorite / Serpentine group (Mg3Si2O5(OH)4)

Pink Thulite (in Pumice-like texture)

Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)

Rhodonite

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

Serpentinite

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

Rhodonite

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

Rhodonite

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

Rhodonite

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

Rhodonite

Rhodonite (Mn2+SiO3)

Rhodonite

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

Quartzite

Quartzite (SiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Potassium Feldspar

K-Feldspar (Orthoclase/Microcline) KAlSi3O8

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Feldspar (specifically Orthoclase)

Potassium Aluminum Silicate (KAlSi3O8)

Quartzite Pebble

Metamorphic Quartzite

Quartzite Pebble

Metamorphic Quartzite

Quartzite Pebble

Metamorphic Quartzite

Quartzite

Metamorphic Quartzite