Bridal Wedding New Fashion 2025 14k Gold Jewelry Black Stone Ring In Latvia.
By Aamir Mannan. Monday, 17, February, 2025.
Rubies have a hardness of 9.0 on the Mohs scale of mineral hardness. Among the natural gems, only moissanite and diamond are harder, with diamond having a Mohs hardness of 10.0 and moissanite falling somewhere in between corundum (ruby) and diamond in hardness.
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