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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 moissonite falling somewhere in between corundum (ruby) and diamond in hardness.jpg)
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Blue Sapphire Mens Engagement Rings 66
Albania Diamond Engagement Rings 31
Afghan Ruby Engagement Ring 30
Jadeite Engagement Ring 16
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Jamaica Diamond White Sapphire Engagement Ring 81
Alexandrite Engagement Rings 17
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Engagement Diamond Ring Democratic Republic Congo (Kinshasa) 137
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Engagement Rings Diamond Burkina Faso 81
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Greece Diamond Fashion Engagement Ring 65
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Engagement Diamond Ring In Dominican Republic 136
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