Moissanite vs Cubic Zirconia (CZ) Side by Side | Jewelry Guide
2021-8-10 · Cubic zirconia is a hard stone but not as tough as moissanite. Cubic zirconia is also a hard stone, ranking at 8 to 8.5. This makes it a good option for daily wear, just like moissanite as it is durable and scratch resistant. However, in terms of toughness, which refers to the gemstone''s resistance to breaking, moissanite is much tougher than CZ.