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.
Identified More gemstone →
Explore Cubic Zirconia (simulant) or Diamond in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
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).
More like this
Other gemstone specimens
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Amber
Succinite (Organic Gemstone)
mineral
Black Opal Ring (Carved Opal)
Hydrated Silicon Dioxide (SiO2·nH2O)
gemstone