CZ/ Cubic Zirconia
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Cubic Zirconia or CZ is a synthetic gemstone material that is very durable. CZ has a hardness of 8-8.5 on the Mohs hardness scale. That makes Cubic Zirconia a very hard and durable gem to wear in jewelry. CZ is available in many colors including Pink, colorless (a Diamond simulant) yellow and green just to name a few.