523
A Colour-Change Sapphire, Gem-set and Diamond Ring
One oval colour-change sapphire, 13.22 caratsSmall cabochon emeralds and brilliant-cut sapphires in the galleryHighlighted by tiny diamonds in the surround and shank18 karat white and blackened gold(13.22-carat Colour-change Sapphire)
<em>AGL report, numbered 8089057, dated 11 March 2019, Ceylon (Sri Lanka), no gemological evidence of heat. </em>