Mineral (Variant Of Quartz)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz / Quartzite Pebble

Silicon Dioxide (SiO2)

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Quartz Pebble

Silicon Dioxide (SiO2)

Unakite (Epidotized Granite)

Epidote-Feldspar-Quartz Rock

Quartz Geode

Quartz (Silicon Dioxide, SiO2)

Quartz Geode

Silicon Dioxide (SiO2) in a Secondary Sedimentary/Volcanic cavity

Gold

Native Gold (Au)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (Clastic Sedimentary Rock)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Sandstone (Quartzose)

Arenite (SiO2 based)

Yellow Aventurine

Quartz containing Muscovite or Mica inclusions (SiO2)

Wishing Stone (Gneiss or Basalt with Quartz Vein)

Gneiss or Metabasalt (with a Quartz or Calcite intrusion)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Pebble)

Arenite / Clastic Sedimentary Rock

Howlite and Purple Amethyst Druzy

Calcium Borosilicate Hydroxide (Howlite) and Silicon Dioxide (Quartz/Amethyst)

Milky Quartz (Water-worn Pebble)

Quartz (Silicon Dioxide) - SiO2

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Quartz (Water-worn Pebble)

Quartz (Silicon Dioxide, SiO2)

Chalcedony (Yellow Agate)

Cryptocrystalline Quartz (SiO2)

Epidote in Matrix

Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Strawberry Quartz

Silicon Dioxide (SiO2) with inclusions of Goethite or Hematite

Amygdaloidal Basalt

Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)

Quartz (Iron-stained or Ferruginous Quartz)

Silicon Dioxide (SiO2)

Quartz (Iron-Stained Quartz Pebble)

Silicon Dioxide (SiO2)

Quartz (specifically Milky/Gray Quartz)

Silicon Dioxide (SiO2)

Leopard Skin Jasper

Chalcedony (cryptocrystalline quartz) with inclusions

Quartz Veinated Sandstone or Siltstone

Silicon Dioxide (SiO2) within a clastic sedimentary matrix

Sandstone (Quartzite Pebble)

Arenite (primarily SiO2)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Sandstone

Clastic Sedimentary Rock (composed mostly of SiO2)

Gold Nugget

Native Gold (Au)

Schist with Quartz Vein

Mica Schist with Crystalline Quartz (SiO2)

Sandstone (likely Quartz Sandstone)

Arenite (SiO2 based)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Gold Nugget

Native Gold (Au)

Tiger's Eye

Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Gold Nugget

Native Gold (Au)