Metamorphic And Mineral

Petrified Wood

Silicified Wood (SiO2 - Silicon Dioxide)

Petrified Wood (Agatized/Silicified Wood)

Silicified Wood (SiO2 - Silicon Dioxide)

Petrified Wood

Silicified Wood (SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Quartz (specifically Citrine or Yellow Quartzite pebble)

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl)

Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)

Grey Agate (Banded Chalcedony)

Agate (Silicon Dioxide - SiO2)

Tumbled Moonstone and Amazonite Chips

Orthoclase (KAlSi3O8) and Microcline (KAlSi3O8) of the Feldspar Group

Milky Quartz

Quartz (Silica / Silicon Dioxide), SiO2

Pink Dyed Agate (Banded Chalcedony)

Silicon dioxide (SiO2) - variety Chalcedony

Milky Quartz

Quartz (Silica / Silicon Dioxide, SiO2)

Clear Quartz (Tumbled)

Quartz (Silicon Dioxide - SiO2)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Emerald and Diamond (Jewelry Setting)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities) and Carbon (C)

Citrine Geode Fragment

Citrine (Silicon Dioxide with Iron Impurities), SiO2

Quartz (Pebble)

Quartz (SiO₂)

Tiger's Eye (Polished Point/Tower)

SiO2 (Silicon Dioxide) with included crocidolite fibers

Ruby

Corundum (Al2O3 with Chromium traces)

Green Aventurine

Silicon Dioxide (Quartz) with inclusions (SiO₂)

Ruby

Corundum (Al2O3:Cr)

Ruby

Corundum (Aluminum Oxide with Chromium traces), Al2O3:Cr

Milky Quartz

Silicon Dioxide (SiO2)

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Amethyst (Chevron or Banded Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Red Garnet

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

Sodalite

Na8(Al6Si6O24)Cl2

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide, SiO2)

Banded Agate (Polished Slice)

Chalcedony (cryptocrystalline Quartz), SiO2

Smoky Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Serpentinite

Serpentinite (complex silicate minerals including Mg3Si2O5(OH)4)

Nephrite Jade

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

Clear Quartz (or Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Nephrite Jade

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

Serpentinite

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

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

Citrine

Citrine (Silicon Dioxide - SiO2)

Graphite

Graphite (C)