Opalite
Synthetic Glass (SiO2 + impurities)
Category
Browse synthetic polymer (synthetic material) specimens identified by the Rock Identifier community.
Opalite
Synthetic Glass (SiO2 + impurities)
Opalite
Synthetic Silicon Dioxide (SiO2)
Green faceted gemstone, likely tsavorite garnet
Tsavorite: green grossular garnet, Ca₃Al₂(SiO₄)₃
Blue cabochon gemstone ring
Likely blue turquoise, glass-filled sapphire, or blue spinel; exact identification requires testing
Coal (Anthracite/Bituminous)
Carbo fossilium (primarily Carbon)
Faceted gemstone ring, likely smoky quartz or garnet in a metal setting
Not determinable from the photograph; possible quartz (SiO₂) or garnet-group silicate
Luminous Stone (Glow-in-the-dark Synthetic/Man-made Stone)
Strontium Aluminate tinted glass or resin (Crystalline silicate/oxide mix)
Faceted blue gemstone, likely aquamarine
Aquamarine—blue beryl, Be₃Al₂Si₆O₁₈; identification is uncertain from the image alone
Turquoise cabochon
Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
Cubic Zirconia
Zirconium Dioxide (ZrO2)
Green cabochon gemstone, likely aventurine or dyed chalcedony
Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony
Blue Goldstone
Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
Blue glassy mineral specimen, possibly blue topaz or aquamarine
Tentatively topaz (Al₂SiO₄(F,OH)₂) or beryl/aquamarine (Be₃Al₂Si₆O₁₈); identification is limited by severe image blur
Hematite
Iron(III) oxide (Fe2O3)
Blue glass-like heart pendant, likely synthetic blue spinel or colored glass
Unconfirmed; possibly synthetic spinel (MgAl₂O₄) or cobalt-colored glass
Blue faceted gemstone, likely synthetic sapphire or blue glass
Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually
Pink-red faceted gemstone, possibly synthetic corundum or spinel
Uncertain; possible ruby (corundum, Al₂O₃) or red spinel (MgAl₂O₄)
Opal gemstone pendant
Opal (hydrated amorphous silica, SiO₂·nH₂O)
Diamond ring
Diamond, crystalline carbon (C), likely colorless or near-colorless brilliant-cut stones set in gold
Faceted transparent gemstone pendant
Likely cubic zirconia (zirconium dioxide, ZrO₂); possibly diamond or synthetic moissanite
Painted Rock
Weathered Sedimentary Rock (Painted)
Painted River Rock
Painted Quartzite or Smooth Siltstone
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
Dyed or synthetic turquoise-blue glass-like specimen
Likely man-made colored glass or resin; exact identification requires testing
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
Ruby / Red Corundum
Al2O3 (Aluminum Oxide with Chromium trace)
Opalite (likely man-made opalescent glass)
Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)
Red/pink faceted gemstone, likely synthetic ruby or red glass
Corundum (Al₂O₃) if ruby; identity cannot be confirmed visually
Polished purple gemstone, likely amethyst
Amethyst: purple quartz, silicon dioxide (SiO₂)
Cubic Zirconia
Zirconium Dioxide (ZrO2)
Blue gemstone ring, likely lapis lazuli
Lapis lazuli: lazurite-rich metamorphic rock, chiefly (Na,Ca)8(AlSiO4)6(S,SO)2, commonly with calcite and pyrite
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
Turquoise cabochon or turquoise-bearing material
Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
Faceted glass-like gemstone object
Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image
Heart-shaped faceted gemstone pendant
Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones
Assorted Semi-Precious Gemstone Crosses
Quartz, Silicates, Carbonates (various)
Faceted colorless gemstone, likely quartz or glass imitation
Most plausibly rock crystal (quartz, SiO₂); identity is uncertain because the photograph shows only intense facet reflections
Iridescent coated quartz (likely synthetic/display gemstone)
Quartz, silicon dioxide (SiO₂), likely faceted and surface-coated; exact material cannot be confirmed visually