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Spain Girl Fashion Ruby Diamond Engagement Ring 173

Posted by Euro Jewellery Fashion
7:00 AM
Spain Girl Fashion Ruby Diamond Engagement Ring.   
By Farzana Aamir

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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




South Sudan Girl Fashion Ruby Diamond Engagement Ring 172

Posted by Euro Jewellery Fashion
10:09 PM
 South Sudan Girl Fashion Ruby Diamond Engagement Ring.   
By Farzana Aamir


Ruby is α-alumina (the most stable form of Al2O3) in which a small fraction of the aluminium3+ ions are replaced by chromium3+ ions. Each Cr3+ is surrounded octahedrally by six O2− ions.
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