Cubic Zirconia.

Cubic zirconia is made of a synthetic material that is not as hard as a real diamond, it has a value of 8.5 while diamond is 10.

Cubic zirconia is not as resistant to heat as diamond and can easily crack and burn under high temperature.

Another characteristic of cubic zirconia is that it is less durable than diamond also is purely colorless and does not have any tints present in the stone. Since cubic zirconia is cheap, it is also often set in cheap mountings.

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