Sedimentary (Cryptocrystalline Quartz)

Chert (Yellow/Brown Jasper)

Silicon Dioxide (SiO2)

Chert (Jasper variation)

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide - SiO2)

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with impurities of Hematite or Goethite

Red Jasper (Chert)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2)

Quartz

SiO₂ (Silicon Dioxide)

Mineral

Quartz Geode/Cluster

Quartz (SiO2)

Chert (Jasper)

Silicon dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Chalcedony (Common Agate)

Silicon Dioxide (SiO2)

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide impurities

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Quartz

Silicon Dioxide (SiO2)

Pink Quartzite

Quartzite (SiO2 with iron oxide inclusions)

Quartz (Peach/Orange variety)

Silicon Dioxide (SiO2)

Turquoise (Green variety)

Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O

Chalcedony with Matrix

Silicon Dioxide (SiO2)

Carnelian

Carnelian (SiO2 - Silicon Dioxide with Hematite impurities)

Quartzite River Stone

Quartzite (primarily SiO2)

Native Gold

Native Gold (Au)

Quartzite (Yellow/Orange variety)

Quartzite (primarily SiO2)

Red Jasper

Silicon Dioxide (SiO2) - variety Jasper

Red Jasper

Silicon dioxide (SiO2) with iron inclusions

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Gold Nugget

Native Gold (Au)

Yellow Aventurine (or Citrine-colored Quartz)

Silicon Dioxide (SiO2) with inclusions

Gold

Native Gold (Au)

Clear Quartz Fragment

Quartz (Silicon Dioxide, SiO2)

Quartz Geode with Calcite

Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)

Mineral/Geode

Milky Quartz (or Vein Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Moss Agate and Druzy Quartz Carving

Cryptocrystalline Silica (SiO2) with impurities