Synthetic (Not A Natural Rock)

Bowling Ball (Brunswick T-Zone Deep Space)

Polyester resin / Polyurethane polymer

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Faceted Gemstone

Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

Colorless faceted gemstone (likely cubic zirconia)

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

Goldstone (aventurine glass)

Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone

Colorless faceted gemstone (most likely synthetic cubic zirconia)

Cubic zirconia, ZrO₂ (likely synthetic); natural alternatives include quartz or diamond

Painted Rock

Weathered Sedimentary Rock (Painted)

Silicon Carbide (Carborundum)

Silicon Carbide, SiC

Goldstone and pink quartz bead strands

Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible

Blue Goldstone

Man-made glass with cobalt and metal flecks

Pink faceted gemstone, likely synthetic ruby or pink sapphire

Corundum (Al₂O₃), possibly chromium-colored ruby; synthetic origin likely

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); visual confirmation is unavailable

Iron-rich vesicular rock, possibly slag or basalt

Uncertain; likely basaltic rock (plagioclase–pyroxene–iron oxide) or industrial iron slag

Opalite

Synthetic Opalised Glass

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Slag

Anthropogenic Vitreous Silicate / Ferro-silicate Slag

Cubic Zirconia (as used in jewelry setting)

Zirconium dioxide (ZrO2)

Diamond (or Cubic Zirconia)

Cubic Carbon (C) or Zirconium Dioxide (ZrO2)

Opalite

Synthetic glass / Opalized glass

Opalite

Man-made Glass (Synthetic Opalized Glass)

Faceted Clear Quartz or Diamond Simulant

Silicon Dioxide (SiO2) if Quartz or Cubic Zirconia (ZrO2) if Synthetic

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond

Opalite

Synthetic Opalized Glass

Banded Slag Glass (Leland Blue/Frankfort Green style)

Anthropogenic Glass Specimen (Amorphous Silicon Dioxide with impurities)

Goldstone

Avventurina (Cu + SiO2 glass)

Opalite (Man-made Glass)

Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Opalite

Synthetic Opalite Glass / Opalized Glass

Slag Glass

Amorphous Silica Glass (with metal oxide inclusions)

Dyed Quartzite

Metamorphosed Quartz (SiO2) with synthetic pigment

Possible iron-rich basalt or industrial slag

Basalt, likely Fe–Mg silicate rock; exact identification is uncertain from the blurred image

Ruby (in costume jewelry context)

Corundum (Al2O3) with Chromium impurities

Ferruginous Slag (Iron Smelting Byproduct)

Fused Silicate Scoria (Amorphous mixture of FeO, SiO2, and CaO)

Amber (Simulated/Faturan Style)

Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)

Opalite

Synthetic Opalite Glass

Dyed Quartz Pendant

Silicon Dioxide (SiO2) with artificial dye

Basalt Pebble (Beach Pebble)

Mafic Volcanic Rock (Basalt)

Quartzite (Engineered Stone)

Silicon Dioxide (SiO2) based synthetic composite

Opalite

Synthetic Opalized Glass

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass