Diamond (or Diamond Simulant)
Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia - ZrO2, Moissanite - SiC)
Category
Browse mineral (synthetic glass) specimens identified by the Rock Identifier community.
Diamond (or Diamond Simulant)
Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia - ZrO2, Moissanite - SiC)
Hematite
Iron(III) oxide (Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)
Bismuth
Bismuth (Bi)
Diamond
Pure Carbon (C)
Fursuit (Synthetic Fur Specimen)
Canis anthropomorphus syntheticus
Emerald
Beryl (Be3Al2(SiO3)6)
Composite Turquoise or Reconstituted Turquoise with Copper inclusions
CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes
White Sapphire
Corundum (Al2O3)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Ruby
Corundum (Al2O3) with Chromium traces
Cubic Zirconia (CZ) Jewelry
Zirconium dioxide (ZrO2)
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Polished blue chalcedony or glass-like quartz specimen
Chalcedony (microcrystalline SiO₂), possibly treated or synthetic; exact identification requires testing
Black Tourmaline (Schorl)
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Emerald
Beryl (Be3Al2Si6O18), specifically the green variety colored by chromium or vanadium
Smoky Quartz
Silicon Dioxide (SiO2)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Rough Diamond (Uncut Diamond)
Native Carbon (C)
Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)
Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass
Diamond
Native Carbon (C)
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.)
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Cullet Glass (Strawberry Glass)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Moonstone
Orthoclase Feldspar (KAlSi3O8)
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Colorless faceted gemstone (most likely synthetic cubic zirconia)
Cubic zirconia, ZrO₂ (likely synthetic); natural alternatives include quartz or diamond
Clear faceted quartz-like gemstone
Probably rock crystal quartz (SiO₂), though the image may show synthetic glass or cubic zirconia
Dyed Agate
Agate (Cryptocrystalline Quartz), SiO2
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)
Chalcanthite (Likely Synthetic/Lab-Grown)
Hydrated copper(II) sulfate (CuSO4·5H2O)
Ruby
Corundum (Al2O3)
Faceted yellow gemstone ring
Likely yellow sapphire (corundum), but exact identification requires testing; alternatives include citrine, chrysoberyl, or treated diamond.
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Ruby
Corundum (Al2O3 with Chromium traces)
Cut colorless gemstone, likely quartz or glass imitation
Most plausibly rock crystal (clear quartz, SiO₂); synthetic glass cannot be ruled out from the image
Diamond (faceted)
Diamond (Pure Carbon, C)
Synthetic Zinc/Polycarbonate Composite (Bey-specimen)
Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)