Larimar
Pectolite (NaCa2Si3O8(OH))
Category
Browse sedimentary (synthetic) specimens identified by the Rock Identifier community.
Larimar
Pectolite (NaCa2Si3O8(OH))
Goldstone (Synthetic Aventurescence Glass)
Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)
Blue glass-like gemstone, likely synthetic spinel or glass
Uncertain; possibilities include synthetic cobalt-blue spinel (MgAl₂O₄) or cobalt-colored glass
Blue topaz-style pendant (stone identity uncertain)
Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic
Colorless faceted gemstone, likely cubic zirconia or diamond
Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)
Diamond ring
Diamond, crystalline carbon (C), likely colorless or near-colorless brilliant-cut stones set in gold
Small faceted gemstone, likely diamond
Diamond (crystalline carbon, C)
Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond
Goldstone
Aventurine glass
Faceted glass-like gemstone object
Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image
Red faceted gemstone jewelry setting
Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
Cubic Zirconia
Zirconium Dioxide (ZrO2)
Diamond (Baguette cut)
Carbon (C)
Aquamarine in Onyx / Blue Topaz Pendant
Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Tumbled amethyst
Amethyst, purple quartz (SiO₂), colored by trace iron and irradiation
Tumbled amethyst
Quartz, crystalline silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation
Garden Quartz (Lodalite)
Silicon Dioxide with various mineral inclusions (SiO2)
Likely colorless topaz
Topaz, Al₂SiO₄(F,OH)₂
Amethyst (faceted gemstone)
Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron-related defects
Mixed gemstone specimens
Likely pink sapphire or tourmaline, red garnet, blue sapphire, precious opal, and green tourmaline/emerald; exact identities cannot be confirmed from the collage
Smoky Quartz
Silicon Dioxide (SiO2)
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
Magnetite or Hematite-rich Ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
Ruby
Corundum (Al2O3 with Chromium trace impurities)
Amber
Succinite (specifically for Baltic amber; general formula C10H16O)
Blue faceted gemstone, likely synthetic sapphire or blue glass
Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually
Red garnet cabochon-style earrings
Likely almandine garnet (Fe₃Al₂(SiO₄)₃); the image alone cannot confirm the stone or whether it is natural or synthetic.
Likely silicon carbide (carborundum)
Synthetic silicon carbide (SiC), likely blue-green crystalline grit
Colorless faceted gemstone, likely glass or quartz
Uncertain; possibly quartz (SiO₂), but the strong uniform brilliance and apparent molded/faceted form may indicate leaded glass or cubic zirconia
Goldstone (Brown)
Aventurine Glass (Silicon Dioxide infused with Copper crystals)
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
Bismuth crystal
Bismuth (Bi), synthetic laboratory-grown crystal
Opalite
Man-made Opalized Glass (Synthetic Glass)
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
Dyed or synthetic turquoise-blue glass-like specimen
Likely man-made colored glass or resin; exact identification requires testing
Opalite (likely man-made opalescent glass)
Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)