Quartz

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Rose Quartz

Silicon dioxide (SiO2) with trace impurities of titanium, iron, or manganese

Rose Quartz

Silicon Dioxide (SiO2)

Dendritic Quartz

Silicon Dioxide (SiO2) with Manganese Oxide inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Rose Quartz (tumbled)

Rose Quartz (variety of Quartz, chemical formula SiO₂)

Quartzite (likely Iron-stained)

SiO2 (Metamorphosed Sandstone)

Super Seven (Melody Stone)

Quartz with inclusions (Amethyst, Cacoxenite, Goethite, Lepidocrosite, Rutile, Smoky Quartz, and Clear Quartz)

Granite

Granite (Felsic Plutonic Rock)

Sandstone (Quartzose)

Arenite (SiO2 based)

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)

Ferruginous Quartz

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Sandstone (likely Arkose or Lithic)

Clastic sedimentary rock (SiO2 + impurities)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Citrine or Iron-Stained)

Silicon Dioxide (SiO2)

Granite or Pegmatite in host rock

Granitoid / Felsic Intrusive Rock

Rutilated Quartz (or possibly Tourmalinated Quartz, White Rutile)

SiO2 with TiO2 inclusions

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite Cobble

Metamorphosed Quartz Sandstone (primarily SiO2)

Yellow Quartz (Citrine-colored Quartz)

Silicon Dioxide (SiO2)

Jasper with Quartz inclusions

Silicon Dioxide (SiO2) with varying mineral impurities

Quartzite Pebble (Beach Pebble)

Quartzite (primarily SiO2)

BROWN GRANITE (likely 'Tan Brown' or similar)

Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)

Quartz (Gravel Pebble)

Silicon Dioxide (SiO2)

Granite or Granitic Gneiss

Granitoid / Gneiss

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Water-Worn Pebble)

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Iron-stained)

Arenite (primarily SiO2 with Fe2O3 staining)

Quartz with inclusions (likely Chlorite or Hornblende) and country rock

SiO2 (Quartz) with associated ferromagnesian minerals

Sandstone (with biological crust)

Arenite (SiO2 based)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz pebble

Silicon Dioxide (SiO2)

Quartz Geode or Nodular Quartz

Silicon Dioxide (SiO2) in Host Matrix

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

Yellow Quartzite

Quartzite (SiO2 with iron oxide inclusions)

Granite or Pegmatite with Mica

Granitoid