Synthetic Cubic Zirconia

A cheap substitute for diamond

What is Cubic Zirconia?

Cubic Zirconia (or CZ) is zirconium oxide (ZrO2 ), is widely synthesized for use as a diamond simulant and it is a lab-made created stone with a specific gravity of between 5.6-6.00 and at about 8.5 hardness on Mohs scale, which is harder than most natural gems. Its refractive index is high at 2.15 – 2.18 (B-G interval) and its luster are very good. Its dispersion is very high at 0.058 – 0.066, exceeding that of the diamond (0.044).