Quartz

Milky Quartz

Silicon Dioxide (SiO2)

Quartz with Epidote

Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Polished snowflake obsidian-like stone (likely milky quartz with black tourmaline)

Quartz (SiO₂), probably containing black tourmaline (schorl, NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) inclusions

Quartz Pebble

Silicon Dioxide (SiO2)

Pink quartz (rose quartz), possibly quartz-rich rock

Quartz, silicon dioxide (SiO₂), commonly rose quartz

Pink quartz (likely rose quartz)

Quartz, silicon dioxide (SiO₂)

Quartz vein in Host Rock

Crystalline Silicon Dioxide (SiO2) in Lithic Matrix

White quartz-rich pebble, possibly milky quartz

Milky quartz (SiO₂), with possible feldspar or calcite inclusions

Milky Quartz with Garnet/Hematite and Basalt

Silicon Dioxide (SiO2) with Almandine (Fe3Al2Si3O12) and Basalt

Quartz Vein in Pelite (Metamorphic Rock)

Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)

Tourmalinated Quartz

Quartz (SiO2) with included Tourmaline (complex borosilicate)

Quartz with chlorite inclusions

Quartz (SiO₂), likely containing green chlorite-group minerals

Tumbled quartz pebble

Quartz, silicon dioxide (SiO₂)

Quartz (Rose Quartz or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Quartz Druzy / Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Quartz (likely milky quartz or quartz glass-like fragment)

Quartz, silicon dioxide (SiO₂)

Quartz (Milky Quartz / Quartz Specimen)

Silicon Dioxide (SiO2)

Quartz (Rose Quartz / Quartz Pebble)

Silicon Dioxide (SiO2)

Quartz (Milky Quartz / Quartz Crystal)

Silicon Dioxide (SiO2)

Quartz (clear quartz/crystal quartz)

Quartz, silicon dioxide (SiO₂), trigonal crystal system

Quartz (Pink/Rose Quartz or Quartz Crystal)

Silicon Dioxide (SiO2)

Chrysocolla-bearing quartz (likely chrysocolla in quartz)

Chrysocolla, hydrated copper aluminosilicate: approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O, intergrown with quartz (SiO₂)

Pegmatitic rose quartz with black tourmaline

Quartz (SiO₂) with schorl tourmaline (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄), likely feldspar and mica

Quartz with Epidote / Chlorite Inclusions

Silicon Dioxide (SiO2) with Epidote Ca2(Al,Fe)3(SiO4)3(OH)

Amethyst stalactite slice pendant

Amethyst (紫 quartz), SiO₂, with concentric quartz/chalcedony and likely agate banding

Quartz-veined Metamorphic Pebble

Silicate-rich metamorphic rock with quartz veins (SiO2)

Quartzite with Epidote Vein

Metamorphosed Quartz Sandstone with Hydrothermal Vein

Gold-bearing Quartz with Iron Oxides

Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite pebble

Quartzite (SiO2)

Tumbled tourmalinated quartz

Quartz (SiO₂) with black schorl tourmaline inclusions

Amethyst geode

Quartz, SiO₂; purple variety colored mainly by iron impurities and irradiation

Yellow Quartz (Polished)

Silicon Dioxide (SiO2) with iron inclusions

Tumbled rose quartz

Quartz, silicon dioxide (SiO₂), pink variety commonly called rose quartz

Pink quartz (likely rose quartz)

Quartz, silicon dioxide (SiO₂), commonly quartz var. rose quartz

Milky quartz (rough fragment)

Quartz, silicon dioxide (SiO₂)

Blue chalcedony crystal pendant

Chalcedony, microcrystalline quartz (SiO₂), likely blue chalcedony or dyed quartz

Green Quartz / Prasiolite

Silicon Dioxide (SiO2)

Iron-stained Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz-bearing rock, possibly quartzite

Quartz (SiO₂), likely in a quartzite or quartz-rich metamorphic matrix