Definition: Cubic zirconia (CZ) is a synthetic stone often used as a less expensive alternative to a diamond. A relatively hard crystalline substance, cubic zirconia is rated at 8.5 on the Mohs scale (versus 10 for diamond).
Cubic Zirconia FAQs
Common Misspellings: Cubic zirconia is sometimes confused with zircon, a naturally occurring mineral; cubic zirconia is sometimes incorrectly called cubic zirconium.