590
A Sapphire and Diamond Ring
One oval sapphire, 10.43 caratsSurrounded by brilliant-cut diamonds, totalling approximately 2.70 caratsPlatinum(10.46-carat Sapphire)
<em>GIA report, numbered 2327379029, dated 8 April 2019, Sri Lanka (Ceylon), no indications of heating.
Gem report, Sri Lanka, no indication of thermal treatment, 'royal blue' colour. </em>