Metamorphic Or Igneous With Mineral Inclusion

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Milky quartz (白 quartz)

Quartz, silicon dioxide (SiO₂)

Faceted Quartz or Cubic Zirconia

SiO2 (Quartz) or ZrO2 (Cubic Zirconia)

Polished pink feldspar pebble

Microcline or orthoclase feldspar, KAlSi₃O₈, possibly with quartz or mica inclusions

Tumbled pink quartz, possibly rose quartz

Quartz (SiO₂), likely rose quartz; exact identification requires testing

Clear quartz pebble

Quartz (silicon dioxide, SiO₂)

Tumbled quartz-rich pebble

Quartz (SiO₂), possibly iron-stained or included quartz

Blue Aventurine

Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions

Amygdaloidal Basalt with Quartz

Basalt (SiO2 inclusion)

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Clear quartz sphere

Quartz (silicon dioxide, SiO₂)

Tumbled green aventurine (likely)

Quartz, SiO₂, with green fuchsite mica inclusions

Milky quartz (rough quartz fragment)

Quartz, silicon dioxide (SiO₂)

Weathered basalt cobble

Basalt, a fine-grained mafic volcanic rock

Multi-Gemstone Quartz Bracelet (Amethyst, Aventurine, Rose Quartz, Clear Quartz)

Silicon Dioxide (SiO2) mixture

Quartz Vein in Hematitic Siltstone

Hydrothermal Quartz (SiO2) in Ferriferous Matrix

Tumbled quartz crystal (likely smoky or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Quartz pebble

SiO2 (Silicon dioxide)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with mineral inclusions

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Tumbled green aventurine

Quartz (SiO₂), typically colored by fuchsite mica inclusions

Quartz in Greenstone

Metamorphic rock with quartz vein (SiO2 / mixed silicates)

Yellow Agate

Silicon Dioxide (SiO2)

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂), likely massive milky quartz

Polished green-inclusion stone, likely chlorite-included quartz

Quartz (SiO₂) with chlorite inclusions; exact identification is uncertain from the photograph

Tumbled and polished quartz crystal points

Quartz (silicon dioxide, SiO₂), chiefly rock crystal with smoky or included varieties

Milky Quartz with Chlorite inclusion

Silicon Dioxide (SiO2) with Chlorite group inclusions

Quartz (in a rock matrix)

Quartz (SiO2)

Tumbled quartz pebble

Quartz (silicon dioxide, SiO₂)

Tumbled yellow quartz (likely iron-stained quartz)

Quartz, silicon dioxide (SiO₂), with iron-oxide staining and possible minor inclusions

Basalt with Quartz Vein

Basalt (SiO2 vein inclusion)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Greenstone (possibly Basalt or Greenschist)

Greenschist (composed primarily of chlorite, actinolite, and epidote)

Quartz with Schist Inclusion

Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist

Milky Quartz Pebble with Matrix

Quartz (SiO2)

Weathered rock with a tan mineral vein or inclusion

Indeterminate from the photograph; possibly a quartz- or feldspar-rich vein in dark metamorphic host rock

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Quartz with Mica/Schist inclusion

Silicon Dioxide (SiO2) with Phyllosilicates

Tumbled milky quartz (probable)

Quartz, silicon dioxide (SiO₂)

Blue Dumortierite Quartz

AlAl6BSi3O18 (Dumortierite) within SiO2 (Quartz)

Quartz with Mica / Chlorite Inclusion

Silicon Dioxide (SiO2) with Phyllosilicate minerals

Red Aventurine

SiO2 (Silicon Dioxide with Hematite/Goethite inclusions)