Metamorphic (Modified)

Quartzite

Quartzite (SiO2)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Quartzite River Rock

Quartzite (SiO2)

Mica Schist

Mica Schist (contains Muscovite, Biotite, and Quartz)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2 silicon dioxide)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Serpentinite

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

Serpentinite

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

Quartzite

Quartzite (mostly SiO2)

Quartzite Pebble

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite

Quartzite (SiO2)

Feldspar-rich Quartzite

Meta-arkose (Quartz-Feldspar Quartzite)

Unakite

Unakite (Epidotized Granite)

Unakite Granite

Epidotized Granite

Quartzite river pebble

Quartzite (SiO2)

Unakite

Unakite (Epidotized Granite)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Unakite

Unakite-Epidote Granite

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Pebble

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Serpentinite

Serpentinite (composed largely of serpentine group minerals including antigorite, lizardite, and chrysotile)

Serpentinite (with Pyrite/Garnet inclusions)

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4

Quartzite

Quartzite (SiO2)

Picasso Jasper

Metamorphosed limestone / Marble

Nephrite Jade

Nephrite (Silicate mineral: Ca2(Mg, Fe)5Si8O22(OH)2)

Serpentine

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

Quartzite

Quartzite (SiO2)

Gneiss (Granitic Gneiss)

Gneiss

Quartzite pebble

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Soapstone

Steatite

Quartzite

Quartzite (SiO2)

Anthracite Coal with Sulfur staining

Anthracite (Carbon C with impurities)

Banded Gneiss

Gneiss

Quartzite

Quartzite (SiO2)

Quartzite (Meta-sedimentary)

Quartzite (SiO2)

Nuummite

Antigorite-Anthophyllite complex

Quartzite Pebble

Quartzite (SiO2)