Red glassy cabochon, likely synthetic ruby or red glass
Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass
Category
Browse mineral (synthetic glass) specimens identified by the Rock Identifier community.
Red glassy cabochon, likely synthetic ruby or red glass
Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass
Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)
Quartz, silicon dioxide (SiO₂)
Opalite
Man-made Glass (Synthetic Opalized Glass)
Opalite
Synthetic Glass (Simulated Opal)
Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
Pink faceted gemstone, likely synthetic ruby or pink sapphire
Corundum (Al₂O₃), possibly chromium-colored ruby; synthetic origin likely
Opalite
Synthetic Opalised Glass
Red glass-like crystal, likely synthetic ruby or red glass
Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass
Costume Jewelry with Synthetic Gemstones
Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)
Opalite
Synthetic Opalized Glass / Man-made Glass
Red glassy mineral specimen, likely synthetic ruby or red spinel
Most consistent with synthetic corundum (Al₂O₃, ruby) or synthetic spinel (MgAl₂O₄); exact identification requires testing
Faceted gemstones, likely assorted quartz or glass-like gems
Not determinable from the photograph; possible quartz (SiO₂), topaz, or synthetic cubic zirconia
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
Milky Quartz
Silicon Dioxide (SiO2)
Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)
There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).
Pink/red faceted gemstone, likely synthetic ruby or pink sapphire
Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material
Goldstone
Aventurine glass
Ruby (set in a ring; possibly synthetic or imitation)
Corundum, Al₂O₃; red color is typically caused by chromium
Gemstone rings (stones not reliably identifiable)
The pale stone may be quartz or another translucent gem; the red stone may be ruby, garnet, or synthetic corundum. Image detail is insufficient for identification.
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)
BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel
Blue glass-like bead or gemstone keychain ornament
Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image
Blue-violet faceted gemstone, likely amethyst
Quartz (SiO₂), purple variety colored mainly by iron impurities and irradiation
Clear quartz crystal sphere
Quartz (silicon dioxide, SiO₂)
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
Green iridescent glass cabochon or synthetic gemstone
Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone
Blue glass-like gemstone, likely synthetic spinel or glass
Uncertain; possibilities include synthetic cobalt-blue spinel (MgAl₂O₄) or cobalt-colored glass
Opalite
Synthetic glass (SiO2 + metal additions)
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
Strawberry Quartz (or Sunstone / Tumbled Quartz)
Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions
Strawberry Quartz (Hematoid Quartz)
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Opalite
Synthetic Glass (Hydrated Silica Simulant)
Faceted transparent gemstone, likely glass or cubic zirconia
Uncertain from image; possible cubic zirconia (zirconium dioxide, ZrO₂) or glass imitation
Green glass-like cabochon, likely synthetic glass or resin
Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin
Opalite
Synthetic Glass (Simulated Opal)
Opalite
Synthetic Glass / Man-made Opal Simulant
Likely blue glass or synthetic gemstone jewelry
Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass
Garden Quartz (Lodalite)
Silicon Dioxide with various mineral inclusions (SiO2)
Zirconia (Ceramic) & Ion-X Glass
Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass
Red cabochon gemstone ring (likely ruby or red spinel; identity unconfirmed)
Possibly corundum (ruby, Al₂O₃) or spinel (MgAl₂O₄); visual identification alone cannot distinguish these from glass or synthetic stones.
Chipped Glass/Plastic Fragment
Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic