Polished blue chalcedony or glass-like quartz specimen
Chalcedony (microcrystalline SiO₂), possibly treated or synthetic; exact identification requires testing
Category
Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.
Polished blue chalcedony or glass-like quartz specimen
Chalcedony (microcrystalline SiO₂), possibly treated or synthetic; exact identification requires testing
Ruby (faceted gemstone)
Corundum (Al2O3 with Cr impurities)
Moonstone
Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.
Cultured Marble (Synthetic)
Polymer-matrix composite (typically calcium carbonate in polyester resin)
Diamond
Diamond (C)
Aquamarine in Onyx / Blue Topaz Pendant
Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)
Diamond (Baguette cut)
Carbon (C)
Cubic Zirconia (Faceted Gemstone)
Zirconium dioxide (ZrO2)
Cullet Glass (Strawberry Glass)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Diamond (faceted)
Diamond (Pure Carbon, C)
Bituminous Coal
Organic-rich sedimentary rock (Complex hydrocarbons)
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)
Black Tourmaline (Schorl)
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Likely diamond accent
Diamond (crystalline carbon, C)
Diamond
C (Native Carbon)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
White Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Chalcanthite (Likely Synthetic/Lab-Grown)
Hydrated copper(II) sulfate (CuSO4·5H2O)
Rough Diamond (Uncut Diamond)
Native Carbon (C)
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
Synthetic Zinc/Polycarbonate Composite (Bey-specimen)
Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay
Corundum
Corundum (Al2O3)
Pearl-embellished decorative cross
Pearl (biogenic calcium carbonate, predominantly aragonite) with rhinestone-mounted glass or synthetic gemstones
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Lapis Lazuli
Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Moonstone
Orthoclase Feldspar (KAlSi3O8)
Opal
Hydrous silicon dioxide (SiO2·nH2O)
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Amber
Succinite (specifically for Baltic amber; general formula C10H16O)
Anthracite Coal
Anthracite (Carbon ≥ 86%)
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Diamond
Diamond (C)
Ruby (Faceted)
Corundum (Al2O3 with Cr trace elements)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Jade (likely Nephrite Jade based on appearance)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Diamond (Faceted)
Diamond (Pure Carbon, C)
Blue Opal Inlay (Simulated/Lab-created)
Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Rutilated Quartz
Quartz (SiO2) with Rutile inclusions (TiO2)