Synthetic Material (Not A Natural Rock

Polymer Clay (Mock Mineral)

Polyvinyl chloride (PVC) with plasticizers and pigment

Faceted Gemstone

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

Green glass-like cabochon, likely synthetic glass or resin

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

Silicon Carbide (Carborundum)

Silicon Carbide, SiC

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Diamond (or Cubic Zirconia)

Cubic Carbon (C) or Zirconium Dioxide (ZrO2)

Cubic Zirconia

Zirconium dioxide (ZrO2)

Opalite

Synthetic Opalized Glass

Pink faceted gemstone, likely synthetic ruby or pink sapphire

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

Opalite

Synthetic glass / Opalized glass

Man-made Synthetic Material (Plastic/Composite)

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

Goldstone

Avventurina (Cu + SiO2 glass)

Opalite

Man-made Glass (SiO2 + additives)

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

Blue cabochon gemstone, likely sapphire

Corundum (Al₂O₃), blue variety colored mainly by iron and titanium

Colorless faceted gemstone (likely cubic zirconia)

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

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Faceted blue gemstone, likely blue topaz or synthetic spinel

Topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); image insufficient for certainty

Tumbled turquoise-like stone

Likely turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Goldstone (aventurine glass)

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

Goldstone

Aventurine Glass (Man-made)

Cubic Zirconia

Cubic Zirconium Dioxide (ZrO2)

Colorless faceted gemstone (most likely synthetic cubic zirconia)

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

Opalite (Synthetic Moonstone/Sea Opal)

Silicon Dioxide (SiO2) glass with metallic inclusions

Opalite

Man-made glass (traditionally simulated Opal)

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Colorless faceted gemstone, likely cubic zirconia

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

Painted River Rock

Artificially Coated Sedimentary Rock

Dyed Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Painted Rock

Weathered Sedimentary Rock (Painted)

Opaline Glass (Opalite)

Synthetic Silicon Dioxide Glass

Faceted Clear Quartz or Diamond Simulant

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

Synthetic Marbled Aggregate (Footwear Component)

Ethylene-vinyl acetate (Croslite™)

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

Moissanite

Silicon Carbide (SiC)

Blue Goldstone

Man-made glass with cobalt and metal flecks

Artificial Rock Face (Faux Rock)

Glass Fiber Reinforced Concrete (GFRC)

Sapphire

Corundum (Al2O3)

Iron-rich vesicular rock, possibly slag or basalt

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

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)