Man Made (Synthetic Rock)

Blue cabochon, likely dyed or synthetic material

Undetermined; possibly dyed chalcedony (SiO₂), glass, or synthetic corundum

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Opalite (a synthetic glass)

Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant

Goldstone

Avventurina (Man-made Glass with Copper inclusions)

Goldstone

Aventurine glass

Goldstone

Man-made glass containing metallic copper inclusions

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Goldstone

Man-made glass infused with copper crystals

Tumbled opalite (likely man-made glass)

Opalite glass; a synthetic opalescent glass, not a natural mineral species

Man-made Ceramic / Clay Figurine

Aluminosilicate Ceramic (Processed Clay)

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Hematite

Iron(III) oxide (Fe2O3)

Acrylic or Resin (Synthetic Imitation)

Polymethyl Methacrylate (PMMA) or Polyepoxide

Blue Sandstone

Man-made glass with cobalt and copper inclusions

Blue glassy-looking specimen, possibly dyed or coated mineral

Not identifiable from the photograph; possibilities include dyed quartz or glassy slag, but composition cannot be established visually.

Blue cabochon gemstone, likely synthetic glass or dyed stone

Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli

Blue Goldstone

Aventurine Glass

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Cultured Marble (Synthetic)

Polymer-matrix composite (typically calcium carbonate in polyester resin)

Dyed or synthetic turquoise-blue glass-like specimen

Likely man-made colored glass or resin; exact identification requires testing

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Opalite

Synthetic glass (SiO2 + metal additions)

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

Opalite

Synthetic Opalite Glass (Silicon Dioxide)

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Not a geological specimen

N/A (man-made object)

Opalite (likely man-made opalescent glass)

Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)

Opalite

Synthetic Glass (typically Silica/Magnesium based with metal additives)

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)