Cubic Zirconia (Faceted Gemstone)
Zirconium dioxide (ZrO2)
Category
Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.
Cubic Zirconia (Faceted Gemstone)
Zirconium dioxide (ZrO2)
Opal stud earrings
Opal, hydrated amorphous silica (SiO₂·nH₂O)
Orange Sapphire
Corundum (Al2O3)
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)
Ruby (faceted gemstone)
Corundum (Al2O3 with Cr impurities)
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Cullet Glass (Strawberry Glass)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Diamond
Diamond (C)
Black Tourmaline (Schorl)
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Diamond
C (Native Carbon)
Rough Diamond (Uncut Diamond)
Native Carbon (C)
Bituminous Coal
Organic-rich sedimentary rock (Complex hydrocarbons)
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.)
Amber
Succinite (specifically for Baltic amber; general formula C10H16O)
Faceted red gemstone, likely garnet
Garnet group; probably almandine-pyrope solid solution, (Fe,Mg)₃Al₂(SiO₄)₃
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Blue topaz pendant
Topaz (Al₂SiO₄(F,OH)₂), likely treated blue topaz
White Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Moonstone
Orthoclase Feldspar (KAlSi3O8)
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Corundum
Corundum (Al2O3)
Diamond
Diamond (C)
Likely diamond accent
Diamond (crystalline carbon, C)
Anthracite Coal
Anthracite (Carbon ≥ 86%)
Turquoise ring
Turquoise, hydrated copper–aluminum phosphate (CuAl₆(PO₄)₄(OH)₈·4H₂O)
Gemstone butterfly brooch/pendant
Likely faceted pink tourmaline or synthetic spinel in gilt metal; exact identification requires testing
Jade (likely Nephrite Jade based on appearance)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Diamond (Faceted)
Diamond (Pure Carbon, C)
Lapis Lazuli
Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Opal
Hydrous silicon dioxide (SiO2·nH2O)
Star ruby cabochon ring
Corundum, Al₂O₃ (ruby variety), displaying asterism
Diamond (appearing as a jewelry centerpiece)
Diamond (Formula: C)
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Ruby (Faceted)
Corundum (Al2O3 with Cr trace elements)
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Diamond-set ring (likely lab-grown or natural diamonds)
Diamond, crystalline carbon (C)
Red faceted gemstone ring
Likely synthetic ruby or red spinel; exact identification requires testing
Cut colorless gemstone, likely quartz or glass imitation
Most plausibly rock crystal (clear quartz, SiO₂); synthetic glass cannot be ruled out from the image
Blue Opal Inlay (Simulated/Lab-created)
Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin
Blue opal heart cabochon
Common opal, hydrated amorphous silica (SiO₂·nH₂O), likely blue-dyed or synthetic opalite
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides