Synthetic Polymer (Polylactic Acid)

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Pink tourmaline (rubellite)

Elbaite tourmaline, lithium sodium aluminum borosilicate: Na(Li1.5Al1.5)Al6(BO3)3Si6O18(OH)4

Amethyst ring

Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones

Labradorite cabochon

Labradorite, a calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈

Ametrine

Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

Blue-green gemstone ring, likely treated turquoise or synthetic/treated beryl

Indeterminate from image; possibilities include turquoise (CuAl6(PO4)4(OH)8·4H2O), apatite, or treated beryl

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities and natural radiation

Tourmalinated Quartz

Crystalline Silicon Dioxide with Schorl inclusions (SiO2 + NaFe3Al6(BO3)3Si6O18(OH)4)

Ruby (set in a gold pendant)

Ruby (Variety of Corundum, Al2O3)

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Polished amber

Fossilized tree resin; chiefly terpenoid polymers (succinite)

Amber (fossilized tree resin)

Succinite; organic resin composed mainly of polymerized terpenoids

Tumbled amber

Amber (fossilized plant resin; predominantly polymerized succinite)

Amber (likely natural amber fragment)

Fossilized plant resin; predominantly polymerized diterpenoid resin

Amber

Fossilized tree resin (mainly polymerized diterpenoid resin)

Baltic Amber (Butterscotch or Egg Yolk Variety)

Succinite (C10H16O)

Polished honey-yellow quartz-like crystal

Quartz (SiO₂), possibly citrine or heat-treated amethyst

Diamond jewelry pendant or cluster

Diamond, crystalline carbon (C), likely mounted in metal

Man-made Glass (Tumbled/Shaped)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Green glassy gemstone-like specimen

Likely synthetic glass or treated quartz; exact identification requires testing

White Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Blue topaz pendant

Topaz (Al₂SiO₄(F,OH)₂), likely treated blue topaz

Polished amber

Amber (fossilized plant resin; chiefly polymerized diterpenoid resin)

Tumbled amber (likely)

Amber; fossilized plant resin, commonly succinite (organic material rather than a mineral)

Amber

Succinite (organic gemstone, approx. C10H16O)

Amber

Succiniferous organic material (Succinite)

Tumbled amber (likely)

Amber—fossilized plant resin, commonly succinite (C₁₀H₁₆O)

Amber

Fossilized tree resin

Amber

Succinite (Carbon-based organic compound; approximate formula C10H16O)

Amber

Succinite (formula varies, primarily C10H16O)

Amber

Succinite (fossilized resin)

Amber

Fossilized Tree Resin (C10H16O)

Blue-green opal, likely polished common or synthetic opal

Opal (hydrated amorphous silica, SiO₂·nH₂O); identification from the image is uncertain

Raw amber

Fossilized tree resin; primarily polymerized terpenoid resin (succinite when Baltic-type)

Amber (Copal)

Succinate (Fossilized Tree Resin)

Amber with inclusion

Amber (Fossilized Tree Resin)

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Faceted red gemstone, likely garnet

Garnet group; probably almandine-pyrope solid solution, (Fe,Mg)₃Al₂(SiO₄)₃

Polished blue-black cabochon, likely blue obsidian or dyed glass-like stone

Indeterminate from image; possible natural obsidian (volcanic glass), commonly SiO₂-rich rhyolitic glass

Chalcanthite

Copper(II) sulfate pentahydrate (CuSO4·5H2O)

Painted River Rock

Artificially Coated Sedimentary Rock