Cubic Zirconia (CZ): A Complete Buyer's Guide
Cubic zirconia ranks between 8.0 and 8.5 on the Mohs scale, whereas diamonds rate as tens, meaning they're among the world's hardest substances. While cubic zirconia is a comparatively hard stone, it lacks the resilience and durability of diamonds. Prone to chipping, scratches, and other forms of external damage, you must wear it with care.
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