Lot 1788. A Fine .56 carats Fancy Vivid Blue Diamond and Diamond Ring. Estimate 21,000,000 — 28,000,000 HKD (2,675,400 - 3,567,200 USD). Unsold. Courtesy Sotheby's

Set with a cut-cornered rectangular modified brilliant-cut fancy vivid blue diamond weighing 2.56 carats, decorated with brilliant-cut diamonds and diamonds of pink tint, mounted in 18 karat white and pink gold, size 6.

Sotheby's. Magnificent Jewels and Jadeite, Hong Kong, 02 Apr 2019, 02:00 PM