This lot will be sold with no reserve.
502
A Colour-changing Sapphire and Diamond Ring
One step-cut colour-changing sapphire, 5.53 caratsPierced mount set with brilliant-cut and baguette diamonds, totalling approximately 1.00 caratPlatinum(5.53-carat Colour-changing Sapphire)
<em>GRS report, numbered GRS2015-128076, dated 1 December 2015, Madagascar, no indication of thermal treatment, colour-changing from blue in daylight to purple in incandescent light.</em>