Lot 2069. An impressive 25.58 carats, D colour, internally flawless clarity Type IIa rectangular-cut diamond ring, by Harry Winston. Estimate HK$25,000,000 – HK$32,000,000 ($3,200,000-4,100,000). Photo Christie's Image Ltd 2016.

Set with a rectangular-cut diamond, weighing approximately 25.58 carats, to the tapered baguette-cut diamond shoulders, mounted in platinum, ring size 3¾. Signed Winston for Harry Winston

Accompanied by report no. 6173229537 dated 18 January 2016 from the GIA Gemological Institute of America stating that the diamond is D colour, internally flawless clarity, with excellent polish and symmetry; and a Diamond Type Classification letter stating that the diamond has been determined to be Type IIa

Christie's. HONG KONG MAGNIFICENT JEWELS, 31 May 2016, Convention Hall