Sedimentary (Imitation)

Cabochon gemstone ring, likely smoky quartz or tourmaline

Unconfirmed quartz (SiO₂) or brown tourmaline (dravite); visual identification is inconclusive

Faceted yellow gemstone ring

Likely yellow sapphire (corundum), but exact identification requires testing; alternatives include citrine, chrysoberyl, or treated diamond.

Green aventurine cabochon (probable)

Quartz, SiO₂, with green fuchsite or chlorite inclusions

Blue-stone ring, likely set with blue glass or a dark-blue gemstone

The stone cannot be identified reliably from the image; possible sapphire (corundum, Al₂O₃), lapis lazuli, or glass

Trilobite fossil

Trilobita (exact species indeterminable from the image)

Polished pink opal (likely common opal)

Opal, hydrated amorphous silica (SiO₂·nH₂O)

Pearls

Nacre, composed mainly of aragonite (CaCO₃) and conchiolin

Carved ruby-in-zoisite frog

Ruby-in-zoisite (corundum, Al₂O₃, in zoisite, Ca₂Al₃(SiO₄)(Si₂O₇)O(OH))

Green faceted bead strand, likely dyed or synthetic material

Uncertain; possibly green-dyed quartz, glass, or lab-created emerald-like material

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O

Turquoise-bead jewelry

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the beads may be natural turquoise or a stabilized/imitation material

Blue aventurine or dyed blue quartz

Quartz, SiO₂; likely aventurine quartz if natural blue inclusions are present

Translucent jade bangle

Likely jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); the image alone cannot distinguish them.

Mixed gemstone bead strand, likely amethyst and assorted colored stones

Likely purple quartz (amethyst, SiO₂) mixed with unidentified green, orange, and reddish beads

Colorless faceted gemstone, likely glass or quartz

Uncertain; possibly quartz (SiO₂), but the strong uniform brilliance and apparent molded/faceted form may indicate leaded glass or cubic zirconia

Tumbled tiger’s-eye

Quartz variety, chiefly fibrous chalcedony pseudomorph after crocidolite; SiO₂

Turquoise

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Polished amber (possibly imitation or treated amber)

Amber—fossilized tree resin; mostly polymerized terpenoid compounds (not a mineral)

Faceted glass-like gemstone object

Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image

Dyed Howlite

Borosilicate hydroxide (Ca2B5SiO9(OH)5)

Slag Glass

Amorphous Silica / Glass Slag

Polished amber

Amber (fossilized plant resin; chiefly amorphous organic compounds)

Green aventurine cabochon

Quartzite dominated by quartz (SiO₂), colored green by fuchsite mica or chlorite

Green aventurine cabochon (likely)

Quartzite/aventurine quartz, predominantly SiO₂ with possible fuchsite mica

Amber (possibly polished or rough amber)

Natural fossil resin; not a mineral, with variable organic composition dominated by polymerized terpenes

Polished carnelian

Carnelian, orange-red cryptocrystalline quartz (SiO₂), chalcedony variety

Polished dendritic agate or jasper cabochon

Microcrystalline quartz, SiO₂, likely chalcedony with iron/manganese oxide inclusions

Tumbled turquoise

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Carved red jasper bead (likely ceramic imitation)

Jasper, microcrystalline quartz (SiO₂); exact material uncertain from the image

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Turquoise carving

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Amber (possibly copal)

Fossilized plant resin; amber is organic resin, commonly dominated by polymerized terpenoids

Yellow amber beads

Amber (fossilized tree resin; organic mineraloid, not a true mineral)

Turquoise-and-coral silver jewelry brooch

Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; red cabochons appear to be coral, likely set in silver

Amber cabochon pendant

Amber (fossilized tree resin; chiefly polymerized terpenoids)

Tumbled yellow chalcedony (likely yellow jasper or citrine-colored quartz)

Microcrystalline quartz, SiO₂; coloration may come from iron oxides or fine inclusions

Red cabochon gemstone, likely carnelian

Carnelian: orange-red chalcedony, microcrystalline quartz (SiO₂)

Green aventurine (likely)

Quartz with green fuchsite inclusions; SiO₂

Turquoise ring

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the setting appears to be silver-colored metal

Cut red gemstone, likely ruby

Ruby, gem-quality corundum (Al₂O₃) colored by chromium

Red bead-and-chain costume jewelry, likely glass or plastic

No geological identification; the red beads appear manufactured and cannot be identified as mineral from the image

Honey-colored amber (possibly copal)

Amber: fossilized tree resin, an organic mineraloid; composition varies, mainly carbon, hydrogen, and oxygen