Metamorphic Rock (Variety Of Quartz)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Blue Sapphire

Corundum (Al2O3)

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide) - SiO2

Chert

Chert (Microcrystalline Quartz, SiO2)

Red Quartzite Pebble

Meta-quartzite (SiO2 with Hematite inclusions)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Greenstone / Greenschist

Chlorite schist / Meta-basalt

Quartz-veined Schist (or Metasandstone)

Metamorphic Rock with Quartz Veining (SiO2)

Milky Quartz (Druzy Geode fragment)

Silicon Dioxide (SiO2)

Unakite (or Epidote-rich Granite)

Unakite (Metamorphosed Granite consisting of Epidote, Orthoclase, and Quartz)

Pink Granite

Phaneritic intrusive igneous rock (high Orthoclase Feldspar content)

Quartzite

Metamorphosed Sandstone (SiO2)

Quartzite (Beach Pebble)

Quartzite (Composition: SiO2)

Quartzite

Quartzite (primarily SiO2)

Red Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Serpentine

Antigorite/Lizardite/Chrysotile ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Tiger's Eye (Inlaid in a band)

SiO2 (Silicon Dioxide with Crocidolite inclusions)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Schist with Quartz Vein

Mica Schist with Crystalline Quartz (SiO2)

Quartz (Druzy)

Silicon Dioxide (SiO2)

Serpentine (Greenstone)

Antigorite, Lizardite, and Chrysolite mixture (Mg3Si2O5(OH)4)

Milky Quartz

Quartz (SiO2)

Granitic Gneiss

Felsic Polycrystalline Gneiss

Green Aventurine

Aventurine (a variety of Quartz, SiO2)

Smoky Quartz

SiO2 (Silicon Dioxide)

Quartzite River Rock

Metamorphic Quartzite (SiO2)

Granite

Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)

Quartzite River Rock

Quartzite (primarily SiO2)

Mixed River Pebbles

Clastic Sedimentary Alluvial Deposit / Polymictic Conglomerate Clasts

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper (Yellow/Brown variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))

Schist (Oxidized)

Mica Schist with Iron Oxide staining