Synthetic Polymer (Polylactic Acid)

Ruby (Faceted)

Corundum (Al2O3:Cr)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Opal ring (likely precious opal)

Hydrated amorphous silica, SiO₂·nH₂O; the pictured stone may be natural opal or a lab-created/imitation opal

Opal gemstone pendant

Opal (hydrated amorphous silica, SiO₂·nH₂O)

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Opal ring

Precious opal, hydrated amorphous silica (SiO₂·nH₂O), set in a metal ring

Polished pink corundum (likely treated ruby)

Corundum, aluminum oxide (Al₂O₃); ruby when red-to-pink from chromium

Tumbled tiger’s-eye

Quartz variety, fibrous golden-brown SiO₂ (pseudomorphic quartz after crocidolite)

Blue gemstone, likely tumbled sapphire or blue spinel

Corundum (Al₂O₃) if sapphire; alternatively spinel (MgAl₂O₄)

Hematite

Iron(III) oxide (Fe2O3)

Green faceted gemstone, likely emerald or synthetic emerald

Beryl, Be₃Al₂Si₆O₁₈, colored green by chromium and/or vanadium; identity cannot be confirmed visually

Lapidary Wax (imitation/wax model)

Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Hematite bead bracelet

Hematite (Fe₂O₃), likely polished or magnetically enhanced beads

Decorative gemstone bracelet or jewelry

Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads

Blue glassy mineral fragment, possibly sodalite or dyed/cobalt glass

Uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) if natural, but vivid blue color may indicate cobalt-colored glass

Limonite (Iron Ore)

Limonite; FeO(OH)·nH2O

Tumbled amber (likely copal or imitation amber)

Amber: fossilized tree resin, chiefly polymerized diterpenes; copal is younger, incompletely polymerized resin

Polished amber (likely copal or amber)

Amber: fossilized plant resin, chiefly polymerized diterpenes; copal is younger, partially polymerized resin

Raw ruby (corundum)

Ruby variety of corundum, aluminum oxide (Al₂O₃), colored chiefly by chromium

Ruby (varietal of Corundum)

Corundum (Al2O3:Cr)

Coal (Bituminous or Anthracite)

Carbonaceous Sedimentary Rock

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Ruby

Corundum (Al2O3 with Chromium trace)

Rough Ruby

Corundum (Al2O3 with Chromium impurities)

Smoky Quartz

Silicon Dioxide (SiO2)

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Bismuth

Bismuth (Bi)

Painted River Rock

Polished fluvial clast with acrylic/synthetic pigment coating

Silicon Carbide (Carborundum)

Moissanite (SiC)

Cubic Zirconia (CZ)

Zirconium dioxide (ZrO2)

Blue Sapphire

Corundum (Al2O3)

Amber jewelry (possibly amber-colored glass or resin)

Amber — fossilized plant resin, chiefly composed of polymerized terpenoids; the pictured material cannot be confirmed from the image

Amber

Succinite (Fossilized Tree Resin)

Terrazzo (Man-made Composite)

Cementitious or Resin-bound Lithic Composite

Amber

Fossilized Resin (C10H16O)

Amber

Succinite

Amber

Succinite (Fossilized Tree Resin)

Amber

Amber (C10H16O)

Pink/red faceted gemstone, likely synthetic corundum or glass imitation

Corundum (Al₂O₃), ruby/sapphire variety; exact identification requires testing

Diamond (or synthetic simulant)

Cubic C (Carbon)