Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse synthetic material (not a rock or mineral) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)
Yellow-orange faceted gemstone, likely citrine or yellow topaz
Citrine: quartz, SiO₂; yellow topaz: Al₂SiO₄(F,OH)₂
Cubic Zirconia (CZ) Jewelry
Zirconium dioxide (ZrO2)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Smoky Quartz
Silicon Dioxide (SiO2)
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
Blue Goldstone
Aventurine Glass
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
Diamond (or Cubic Zirconia simulant)
C (Carbon) or ZrO2 (Zirconium Dioxide)
Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (synthetic ZrO₂), possibly glass or quartz
Strawberry Quartz (Hematoid Quartz)
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Cobalt Glass Slug (Man-made Glass)
Amorphous Silica with Cobalt Oxide (SiO2 + CoO)
Sandstone
Sandstone (SiO2-rich clastic sedimentary rock)
Lapidary Wax (imitation/wax model)
Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)
Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
Silicon Carbide (Carborundum)
Moissanite (SiC), though mostly synthetic
Aura Quartz
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
Dyed Agate
Agate (Cryptocrystalline Quartz), SiO2
Faceted Quartz or Cubic Zirconia
SiO2 (Quartz) or ZrO2 (Cubic Zirconia)
Faceted Diamond or Cubic Zirconia
Carbon (C) for Diamond; Zirconium dioxide (ZrO2) for CZ
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Goldstone
N/A (Synthetic Glass with Copper Inclusions)
White Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Goldstone (Brown)
Aventurine glass
Sandstone with Lichen and Iron Oxide Staining
Quartz Arenite / Sandstone
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Quartz with Mafic/Chlorite Veins
Silicon Dioxide (SiO2) with Chlorite/Epidote cross-veining
Bismuth
Bismuth (Bi)
Synthetic Ruby (Jewel Bearings)
Synthetic Corundum (Al2O3 doped with Chromium)
Pearls (likely freshwater cultured pearls)
Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Sapphire (likely blue synthetic sapphire or blue glass in a ring)
Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Blue Sapphire
Corundum (Al2O3 with Cr, Fe, and Ti trace elements)
Hematite
Iron(III) oxide (Fe2O3)
Asphalt Chunk
Asphalt concrete
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Hematite
Iron(III) oxide (Fe2O3)