Metamorphic Or Igneous With Mineral Inclusion

Quartz with Basalt inclusion

Silicon Dioxide (SiO2) with mafic silicate rock

Quartz vein fragment

Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions

Bicolor Quartz Tumble

Silicon Dioxide (SiO2)

Vesicular Basalt

Basalt with secondary mineral infilling (Amygdaloidal Basalt)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Iron-Stained Quartz Pebble

Quartz (Silicon Dioxide, SiO2) with Iron Oxide Inclusion/Staining

Tumbled yellow quartz (likely citrine or iron-stained quartz)

Quartz, SiO₂; yellow color from trace iron or irradiation/heat-related coloration

Quartz with inclusions (likely Tourmaline or Biotite)

Silicon Dioxide (SiO2)

Anyolite

Zoisite with Ruby and Tschermakite (Ca2Al3(SiO4)3(OH) + Al2O3)

Quartzite

Quartzite (SiO2)

Moonstone (Tumbled)

Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Albite

Green Aventurine

SiO2 (Quartz with Fuchsite inclusions)

Milky Quartz

Silicon Dioxide (SiO2)

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

Potassium Feldspar (Orthoclase)

KAlSi3O8

Milky Quartz

Silicon Dioxide (SiO2)

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Green aventurine bead bracelet

Quartz (SiO₂), likely fuchsite-bearing aventurine

White quartz fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Green Aventurine

Silicon dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (White/Milky)

Silicon Dioxide (SiO2)

Rose Quartz

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

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite (SiO2 + Fe2O3)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Pegmatite (Granitic Pegmatite with Quartz, Mica, and Tourmaline/Biotite)

Pegmatite

Dyed green stone cabochon pendant

Likely dyed green aventurine quartz or chrysoprase; exact identification requires testing

Jasper

Silicon dioxide (SiO2)

Translucent quartz pebble (likely milky quartz)

Quartz, SiO₂; exact variety cannot be confirmed from the photograph

Milky Quartz

Silicon Dioxide (SiO2)

Pink feldspar pebble (likely potassium feldspar)

Likely orthoclase or microcline, KAlSi₃O₈; identification is uncertain from the image alone

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Red gemstone ring, possibly synthetic ruby or red glass

Unidentified red stone; ruby is corundum (Al₂O₃), but the image cannot confirm its identity

Milky quartz cluster

Quartz, silicon dioxide (SiO₂)

Mixed quartz gemstone bead bracelet

Quartz, silicon dioxide (SiO₂), in varieties including smoky quartz, amethyst, rutilated quartz, and possibly tourmalinated quartz

Milky Quartz

Silicon Dioxide (SiO2)

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Milky Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss

Rounded gray pebble, likely quartz-rich stone

Indeterminate; possibly quartzite or a weathered granitic pebble

Milky Quartz

Silicon Dioxide (SiO2)