Mineral (Treated)

Smoky quartz (likely)

Quartz, silicon dioxide (SiO₂), naturally irradiated variety

Quartz (Variety: Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Carnelian (Red Chalcedony)

SiO2 (Silicon Dioxide) with Iron Oxide impurities

Polished agate beads

Agate, a banded variety of chalcedony (microcrystalline quartz, SiO₂)

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Citrine

Silicon Dioxide (SiO2)

Pink Satin Spar (Satin Spar Selenite Dyed)

Gypsum (CaSO4·2H2O)

Citrine Quartz / Yellow Quartz Pebbles

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (Quartz variety), SiO2

Citrine Quartz

Silicon Dioxide (SiO2) with trace Iron

Blue-green opal cabochon (likely common opal)

Opal, hydrated amorphous silica (SiO₂·nH₂O)

Peacock Ore (Treated Chalcopyrite)

Copper Iron Sulfide (CuFeS2) coated with oxides

Onyx (Agate) or Black Spinel/Glass

SiO2 (Silicon dioxide) if onyx/agate

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition

Black Onyx

Chalcedony (SiO2 with inclusions)

Citrine Geode

Silicon Dioxide (Quartz variety, often heat-treated amethyst): SiO2

Calcite

Calcite (Calcium Carbonate, CaCO3)

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Amethyst bead bracelet

Quartz, SiO₂; purple variety colored mainly by iron-related defects and irradiation

Beaded gemstone bracelets, likely lavender jade/quartz and blue-gray sodalite or dumortierite

Probable jadeite/nephrite or lavender quartz; blue beads may be sodalite (Na8(Al6Si6O24)Cl2) or dumortierite

Green cabochon, likely dyed or imitation material

Undetermined; the image is insufficient to identify a mineral species

Citrine Quartz

SiO2 (Silicon Dioxide with Iron impurities)

Citrine (Heat-treated Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Quartz (specifically Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Tumbled turquoise-bearing stone (likely turquoise or chrysocolla)

Turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O; possible chrysocolla: hydrated copper silicate

Orange Quartz (or Citrine Quartz)

Silicon Dioxide (SiO2)

Tumbled citrine quartz

Quartz, silicon dioxide (SiO₂), likely iron-colored variety

Citrine (Yellow Quartz)

Silicon Dioxide (SiO2)

Citrine

Citrine (Silicon Dioxide, SiO2)

Polished yellow-orange cabochon, likely citrine (quartz)

Citrine, iron-colored quartz (SiO₂); identification is tentative from the photo

Tumbled citrine quartz

Quartz, silicon dioxide (SiO₂); citrine is yellow iron-related quartz

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Red garnet cabochon-style earrings

Likely almandine garnet (Fe₃Al₂(SiO₄)₃); the image alone cannot confirm the stone or whether it is natural or synthetic.

Citrine

SiO2 (Silicon Dioxide)

Chalcopyrite on Quartz

CuFeS2 (Chalcopyrite) with SiO2 (Quartz)

Citrine

Citrine (Silicon Dioxide - SiO2)

Citrine Quartz

Crystalline Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz

Silicon Dioxide (SiO2)

Polished carnelian agate pendant

Microcrystalline quartz (SiO₂), orange chalcedony; likely banded agate

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)