Quartz

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (likely a form of massive or vein quartz)

Quartz (SiO₂)

Ruby Fuchsite / Ruby in Fuchsite

Ruby (Al2O3 variety corundum) and Fuchsite (K(Al,Cr)2AlSi3O10(OH)2 - a chromium-rich variety of muscovite mica) in Quartz matrix

Gold Ore in Quartz

Native Gold (Au) in Quartz (SiO2) matrix

Auriferous Quartz (Gold-bearing Quartz)

Silicon Dioxide (SiO2) with Elemental Gold (Au)

White Quartz (Milky Quartz Mushroom)

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)

Gold Ore in Quartz

Auriferous Quartz (Gold: Au; Quartz: SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Included Quartz Beads (likely Phantom Quartz or Garden Quartz)

Quartz (SiO2) with various mineral inclusions

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Fluorite with Quartz coating

Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

Quartz crystal with Pyrite inclusions

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within a metamorphic matrix

Rough Rose Quartz

Quartz (Silica - SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz with Pyrite and Iron Staining

Silicon Dioxide (SiO2) with Iron Disulfide (FeS2) inclusions

Pyrite in Quartz (Drill Core)

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions

Chrysocolla in Quartz

Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O in Quartz (SiO2)

Rutilated Quartz

SiO2 (Quartz) with TiO2 (Rutile inclusions)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz in Host Rock

Silicon Dioxide (SiO2) in Rhyolite or Granite matrix

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

White Quartz Sphere

Silicon Dioxide (SiO2)

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Cloudy Quartz (or Milky Quartz)

Silicon Dioxide (SiO2)

Fire Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Quartz Vein in Rhyolite

Silicon Dioxide (SiO2) in extrusive igneous rock