Lot 2209. A 30.59 Carat Sri Lankan ‘Royal Blue’ Sapphire and Diamond Ring. Estimate HKD 3,200,000 - 4,200,000 (USD 408,403 - 536,029). Lot sold HKD 3,776,000 (USD 481,916). © Poly Auction.
Set with an oval-shaped sapphire weighing 30.59 carats, flanked on each side by tapered baguette-cut diamond, to the circular-cut diamond surround and gallery, ring size 5 ½, mounted in platinum.
Accompanied by report no. GRS2018-037883 dated 25 March 2018 from GRS stating that the 30.59 carat is of Sri Lanka origin, vivid blue colour (GRS type “royal blue”), with no indication of thermal treatment.
Poly Hong Kong. Magnificent Jewels, 2 october 2018, Grand Hyatt Hong Kong