Lot 1791. 17.62 carats Royal Blue Burmese Sapphire and Diamond Ring. Estimate HK$3,200,000 — 4,000,000 / US$407,680 - 509,600. Unsold. Courtesy Sotheby's.
Set with a step-cut sapphire weighing 17.62 carats, flanked to each side by triangular shaped and baguette diamonds, mounted in 18 karat white gold, size 6.
Accompanied by SSEF report no. 103190, dated 5 October 2018, and Gübelin report no. 18097160, dated 14 September 2018, stating that the sapphire is of Burmese origin, with no indications of heating; Gübelin report further stating that the tradecolour of the sapphire is 'royal blue'. dated 12 January 2017, stating that the sapphire is of Kashmir origin, with no gemmological evidence of heat and no clarity enhancement.