5.03 carats Diamond Ring, Harry Winston. Estimate 2,600,000 — 3,200,000 HKD (292,911 - 360,506 EUR). Photo Sotheby's

Centring on an emerald-cut diamond weighing 5.03 carats, flanked on each side by a trilliant-cut diamond, mounted in platinum, signed. Ring size: 3¾

Accompanied by a duplicate GIA report numbered 11051617, dated 22 February 2000, stating that the 5.03 carat diamond is D colour, Internally Flawless clarity.

Please note that the certificate is more than 10 years old and might require an update. 

Sotheby's. Magnificent Jewels & Jadeite, Hong Kong, 06 avr. 2015, 01:00 PM