Lot 2052. An important 18.83 carats Ceylon oval-shaped pink sapphire and diamond ring. Estimate HKD 4,800,000 - HKD 6,500,000 (US$600,000-800,000). Price realised HKD 6,340,000. © Christie's Images Ltd 2017

Set with an oval-shaped pink sapphire, weighing approximately 18.83 carats, within a vari-shaped diamond surround and gallery, to the circular-cut diamond half-hoop, mounted in gold, ring size 5 ¾.

Accompanied by report no. 78715 dated 11 March 2015 from the SSEF Swiss Gemmological Institute stating that the pink sapphire is of Ceylon (Sri Lanka) origin, with no indications of heating.

Report no. 14110029 dated 14 November 2014 from the Gübelin GemLab stating that the pink sapphire is of Sri Lanka (Ceylon) origin, with no indications of heating.

Report no. 1178633074 dated 27 June 2014 from the GIA Gemological Institute of America stating that the pink sapphire has no indications of heating.

Christie's. Hong Kong Magnificent Jewels & The Pink Promise, 28 November 2017, Hong Kong