Bismuth
Bismuth (Bi)
Category
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
Bismuth
Bismuth (Bi)
Hematite
Iron(III) oxide (Fe2O3)
Blue Sapphire
Corundum (Al2O3)
Opalite
Synthetic Opalised Glass
Hematite
Iron(III) oxide (Fe2O3)
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
Pink Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate
Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Tumbled hematite
Hematite (Fe₂O₃), commonly sold as “magnetic hematite” when synthetic or magnetized
Synthetic Ruby (Jewel Bearings)
Synthetic Corundum (Al2O3 doped with Chromium)
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Blue Goldstone
Man-made glass with cobalt and metal flecks
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
Opalite
Synthetic Opalised Glass
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
Emerald
Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium
Ruby
Corundum (Al2O3 with Chromium traces)
Green glass-like cabochon, likely synthetic glass or resin
Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin
Clear Quartz (faceted) / Diamond Simulant
Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)
Bismuth Crystal
Bismuth (element symbol Bi, atomic number 83)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Ruby
Corundum (Al2O3 with Chromium)
Opalite
Synthetic Opalite (Man-made glass)
Pink Dyed Agate
Silicon Dioxide (SiO2) with synthetic pigment
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Ruby
Corundum (Al2O3 with Chromium trace)
Smoky Quartz
Silicon Dioxide (SiO2)
Opalite
Synthetic Glass (Hydrated Silica Simulant)
Blue Sapphire (in a faceted jewelry setting)
Corundum (Al2O3) with trace Iron and Titanium
Ruby
Corundum (Al2O3)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium
Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye