Lot 1952. Important 27.23 carats G Flawless clarity Diamond Ring. Estimate: HK$14,500,000.00 - HK$18,000,000.00 (US$1,800,000-2,300,000). © Christie's Images Ltd 2018. 

Round brilliant-cut diamond of 27.23 carats, gold, ring size 5 1/2
GIA, 2015, report no. 1162920525: 27.23 carats, G colour, Flawless clarity, excellent cut, polish and symmetry.