gemstone
Cubic Zirconia (simulant) or Diamond
ZrO2 (Cubic Zirconia) or C (Diamond)
AI-generated identification · may be incorrectClear, faceted, high dispersion and brilliance. If CZ, Mohs hardness 8-8.5; if Diamond, Mohs 10.
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Physical properties
Clear, faceted, high dispersion and brilliance. If CZ, Mohs hardness 8-8.5; if Diamond, Mohs 10.
Formation & geological history
If CZ, synthetic. If Diamond, formed under high pressure and temperature in the Earth's mantle.
Uses & applications
Used in jewelry as a gemstone.
Geological facts
CZ is the most common diamond simulant due to its low cost and high visual similarity to diamond.
Field identification & locations
Identify by measuring thermal conductivity or using a jeweler's loupe to inspect for inclusions (diamonds often have them, CZ is usually flawless).
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N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
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