Quartz

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Yellow Quartz (Polished)

Silicon Dioxide (SiO2) with iron inclusions

Iron-stained quartz vein rock

Quartz-rich rock with iron-oxide/hydroxide coatings (hematite/goethite); exact host rock undetermined

Quartz Pebble with Muscovite Mica

Quartz (SiO2) with Muscovite Mica (KAl2(AlSi3O10)(F,OH)2)

Likely milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Quartz with Iron Oxide Inclusions

SiO2 with Fe2O3 impurities

Likely milky quartz pebble

Quartz, silicon dioxide (SiO₂)

Likely quartz or quartz-rich pebble

Quartz (SiO₂), possibly milky quartz or a small quartzite fragment

Quartz cabochon ring (stone identity uncertain)

Quartz, SiO₂ (possible smoky or included quartz)

Iron-stained quartz or quartz-rich rock

Quartz (SiO₂), possibly limonite/goethite-stained quartzite or breccia

Milky quartz (quartz-rich rock fragment)

Quartz, silicon dioxide (SiO₂)

Likely clear quartz crystal or glass-like gemstone

Quartz, silicon dioxide (SiO₂); exact identification is uncertain from the strongly magenta-lit image

Quartz-rich rock fragment, likely milky quartz with iron staining

Quartz (SiO₂), possibly in a quartz-rich vein rock

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Milky Quartz

Silicon dioxide (SiO2)

Clear quartz (likely)

Quartz, SiO₂

Quartz-bearing metamorphic rock (likely quartz vein in schist or altered granite)

Quartz (SiO₂) in a mica-rich host rock; exact identification requires testing

Tumbled quartz pebble, possibly citrine or iron-stained quartz

Quartz (SiO₂), likely microcrystalline or granular quartz

Weathered quartz-rich pebble

Quartz-bearing granitoid or quartzite; exact identification is uncertain from the image

Tumbled blue stone, possibly sodalite or blue quartz

Indeterminate from the photograph; possibilities include sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue quartz (SiO₂)

Dyed Tumbled Quartz

Silicon Dioxide (SiO2) with artificial pigment

Rose Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Rutilated Quartz (likely Citrine or Smoky Quartz with Rutile inclusions)

SiO2 with TiO2 inclusions (Quartz with Rutile)

Raw smoky quartz (likely iron-stained quartz)

Quartz, SiO₂; brown coloration may reflect irradiation-related smoky quartz and iron-oxide inclusions

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Clear quartz sphere or polished quartz cabochon (tentative)

Quartz, silicon dioxide (SiO₂); appearance may also be consistent with ordinary glass, which cannot be ruled out from the image alone

Iron-stained quartz-rich rock

Likely ferruginous quartzite or iron-oxide-stained quartz; exact identification is uncertain from the photo

Iron-stained quartz-rich rock, possibly weathered granite or pegmatite

Quartz–feldspar rock with iron-oxide alteration; exact identification is uncertain from the photograph

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (Metamorphosed Quartz Sandstone)

Quartz Pebble

Silicon dioxide (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Blue Aventurine

Silicon Dioxide (SiO2) with inclusions of Dumortierite

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Quartz (likely druzy quartz)

Quartz, silicon dioxide (SiO₂)