Quartz

Rutilated Quartz (or Tourmalinated Quartz if inclusions are Tourmaline)

Silicon Dioxide (SiO2) with Rutile (TiO2) or Tourmaline inclusions

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

Quartz with Pyrite inclusions

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

Quartzite

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Epidote and Quartz in Basalt

Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Rutile in Quartz (Rutilated Quartz)

SiO2 with TiO2 inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz with Hematite

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Cloudy Quartz

Silicon Dioxide (SiO2)

Strawberry Quartz (Aventurine)

Silicon Dioxide with Hematite/Lepidocrocite inclusions (SiO2)

Cream Quartz Bead

Silicon Dioxide (SiO2)

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Milky Quartz (Micro-specimen)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Mineral Specimens

Quartz (Silicon Dioxide, SiO2)

Pyrite in Quartz

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Quartz-veined Metamorphic Rock

Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)

Quartz Vein in Host Rock (Likely Slate or Shale)

Hydrothermal Quartz (SiO2) in Pelitic host rock

Yellow Quartz (Polished)

Silicon Dioxide (SiO2) with iron inclusions

Coarse-grained Quartz with Feldspar inclusions

Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions

Rose Quartz

Silicon Dioxide (SiO2)

Ferruginous Quartz

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

Rose Quartz

Silicon Dioxide (SiO2) with trace elements of Titanium, Iron, or Manganese

Gold-bearing Quartz

Auriferous Quartz (SiO2 with native Au)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)