Quartz

Cream Quartz Bead

Silicon Dioxide (SiO2)

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Black tourmaline in quartz

Schorl tourmaline (NaFe3Al6(BO3)3Si6O18(OH)4) with quartz (SiO2)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Strawberry Quartz

Quartz (SiO₂) with Goethite (α-FeO(OH)) and/or Lepidocrocite (γ-FeO(OH)) inclusions

Quartz (Citrine / Golden Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky chalcedony cabochon ring

Chalcedony, microcrystalline quartz (SiO₂), likely white or pale agate variety

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

White tumbled stone, likely quartz or milky chalcedony

Most likely microcrystalline quartz/chalcedony (SiO₂); exact identification requires hardness and specific-gravity testing

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Common or Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky quartz

Quartz, silicon dioxide (SiO₂)

Rose Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz Vein in Matrix

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2)

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Quartz (Milky/Macro-crystalline)

Silicon Dioxide (SiO2)

Green Quartz (Prasiolite variant or Aventurine)

Silicon Dioxide (SiO2)

Yellow quartz (likely lemon quartz/citrine)

Quartz, silicon dioxide (SiO₂); yellow coloration may be iron-related citrine or surface treatment

Gold Quartz (Auriferous Quartz)

Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides

Quartz-bearing rock fragment

Likely quartz (SiO₂) with iron-oxide staining and possible host-rock grains

Rose quartz crystal cluster

Quartz, silicon dioxide (SiO₂), likely pink quartz; crystalline variety may be rose quartz

Cut colorless gemstone, likely quartz or glass imitation

Most plausibly rock crystal (clear quartz, SiO₂); synthetic glass cannot be ruled out from the image

Polished ruby-in-fuchsite or crackle quartz specimen

Likely quartz (SiO₂) with red iron-oxide inclusions; exact identification requires testing

Milky Quartz with Schist Matrix

Silicon Dioxide (SiO2) with Mica Schist Matrix

Likely weathered quartz-rich rock

Probably quartz-bearing sandstone or milky quartz; exact identification requires testing

Faceted clear gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity is uncertain because the strong flash and cut obscure diagnostic features

Rose quartz–bearing pegmatite (probable)

Quartz (SiO₂) in a granitic pegmatite matrix, possibly with feldspar

Milky Quartz (Carved Star Beads)

Silicon Dioxide (SiO2)

Geode Nodule Fragment

Quartz / Chalcedony Nodule