Opalite
Man-made glass (traditionally simulated Opal)
Category
Browse sedimentary (synthetic) specimens identified by the Rock Identifier community.
Opalite
Man-made glass (traditionally simulated Opal)
Opalite
Synthetic glass / Opaque silicious glass
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
Note on Image Identification: Textile
N/A (Anthropogenic material)
Silicon Carbide (Carborundum)
Silicon Carbide, SiC
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
Hematite
Iron(III) oxide (Fe2O3)
Goldstone
Aventurine Glass (Man-made)
Small blue cut gemstone, possibly synthetic spinel or glass; species cannot be determined from the photo
Undetermined; blue synthetic spinel (MgAl₂O₄) is one possibility
Diamond (or Diamond Simulant)
C (Carbon) or synthetic equivalent
Opalite
Synthetic glass / Opalized glass
Opalite
Synthetic Glass (Simulated Opal)
Opalite Egg
Synthetic Glass (Simulated Opal)
Opalite
Synthetic Glass (SiO2 + impurities)
Opalite
Synthetic Silicon Dioxide (SiO2)
Red gemstone ring; likely synthetic ruby or red glass
Undetermined from the image; ruby is corundum (Al₂O₃), while red glass is amorphous silicate
Opalite-style glass pendant
Man-made opalescent glass (not natural opal)
Blue-green cut gemstone, possibly aquamarine
Unconfirmed; aquamarine is blue-green beryl, Be₃Al₂Si₆O₁₈
Red cabochon gemstone ring (likely glass or synthetic stone)
Undetermined; the image does not establish a natural mineral identity
Blue gemstone ring, likely blue topaz or synthetic blue spinel
Likely topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); identification is uncertain from the image
Amethyst quartz cluster
Quartz, SiO₂; purple variety amethyst
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Green faceted gemstone, likely synthetic glass or peridot
Indeterminate from image; possible peridot (olivine, (Mg,Fe)₂SiO₄) or green synthetic glass
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
Opal (in Jewelry Setting)
Hydrated Silicon Dioxide (SiO2·nH2O)
Costume Jewelry with Synthetic Gemstones
Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)
Faceted transparent gemstone pendant
Likely cubic zirconia (zirconium dioxide, ZrO₂); possibly diamond or synthetic moissanite
Faceted gemstone in a jewelry setting
Indeterminate from image; likely quartz, cubic zirconia, or another transparent faceted stone
Green faceted gemstone earrings
Undetermined; possibly green glass or synthetic emerald-type material, rather than identifiable natural emerald
Ruby / Red Corundum
Al2O3 (Aluminum Oxide with Chromium trace)
Pink faceted gemstone, likely synthetic or treated quartz
Quartz, silicon dioxide (SiO₂); exact identity cannot be confirmed from the image
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Green faceted gemstone earrings, likely synthetic emerald-colored glass or cubic zirconia
Undetermined; possible glass (amorphous silicate) or synthetic cubic zirconia (ZrO₂)
Green gemstone ring, likely emerald simulant or jade
Uncertain; possible beryl (emerald, Be₃Al₂Si₆O₁₈) or jadeite (NaAlSi₂O₆), but the blurred image may show synthetic glass or another treated stone
Red gemstone ring, possibly synthetic ruby or red glass
Unidentified red stone; ruby is corundum (Al₂O₃), but the image cannot confirm its identity
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Opalite
Synthetic Glass (Silica-based)
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)