SAPPHIRE AND DIAMOND CLUSTER RING The cushion-shaped sapphire within a brilliant-cut diamond surround, mounted in platinum, London hallmark, ring size approx. L½ Footnotes: Accompanied by a report from GCS stating that the sapphire is of Burmese origin with no indications of heating. Report number 79196-03, dated 22 January 2019. Accompanied by a report from Asia Glory Gemmological Laboratory of Myanmar stating that the sapphire is of Mogok, Myanmar origin with no indications of heating. Report number 036763, dated 4 September 2018. For further information on this lot please visit Bonhams.com