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Cubic Zirconia

Round Brilliant-Cut Cubic Zirconia.

Cubic zirconia is a man-made material used to imitate diamond and other gemstones, commonly referred to as CZ. Cubic Zirconia has a thermal insulating property while diamond is a very efficient thermal conductor. It is therefore easy to separate diamond from CZ with a simple thermal conductivity test like that found in most diamond testers.

There is an extremely rare natural form of Cubic Zirconia but everything used in jewelry production is the man-made variety.

Gemological Information for Cubic Zirconia

  
Color:Colorless, Pink, Red, Yellow, Orange, Blue, Purple, Green and Brown
Crystal Structure:Cubic
Refractive Index:2.15
Durability:Excellent
Hardness:8.5
Family:
Similar Stones:Diamond, Zircon, Strontium Titanate, Sphene, Synthetic Rutile, GGG, YAGSpessartite and Demantoid
Treatments:None
Country of Origin:Man-Made

Cubic Zirconia Care

  
Ultrasonic Cleaning:Safe
Steam Cleaning:Safe
Warm Soapy Water:Safe
Chemical Attack:Chemical Attack
Light Sensitivity:No Reaction
Heat Sensitivity:Sensitive to High Temperatures