Man Made Silicate (Anthropogenic Glass)

Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper

Jasper (Silicon Dioxide, SiO2)

Rose Quartz

Crystalline Silicon Dioxide with trace Titanium/Manganese/Iron (SiO2)

Granite

Phaneritic Plutonic Rock (High Silica content)

Conglomerate with Fossilized Shark Teeth

Clastic sedimentary rock (Conglomerate) containing Elasmobranchii remains

Granite

Granite (Phaneritic Quartz-Feldspar Felsic Rock)

Jasper (likely Ocean Jasper or Variegated Jasper)

Silicon Dioxide (SiO2) with impurities

Fluorite

Calcium Fluoride (CaF2)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Quartz (Milky/Bull Quartz)

Silicon Dioxide (SiO2)

Quartzite (River Pebble)

Metamorphosed Quartz Sandstone (SiO2)

White Quartz Pebble

Silicon Dioxide (SiO2)

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Amethyst

SiO2 (Silicon Dioxide)

Pyrite

Iron Disulfide (FeS2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz with Hematite Staining

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Quartz (specifically Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky or Iron-Stained)

Silicon Dioxide (SiO2)

Moss Agate

Chalcedony (Silicon Dioxide with inclusions) - SiO2

Jasper (specifically Picture Jasper or Landscape Jasper)

Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)

Quartzite River Rock with Dendrites

Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions

Obsidian

Volcanic Glass (predominantly SiO2, approximately 70% or more)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Jade (specifically Nephrite or Jadeite beads)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Pyrite

Iron Disulfide (FeS2)

Milky Quartz

Quartz (SiO₂)

Petrified Wood

Silicified Wood (primarily Chalcedony/Quartz, SiO2)

Jasper (Red Jasper with Quartz veins)

Jasper (Silicon Dioxide, SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz on Matrix

Silicon Dioxide (SiO2)