Ruby and diamond necklace. Photo: Sotheby's

Set with thirty-seven graduated oval rubies together weighing 50.57 carats, decorated by pear-shaped and brilliant-cut diamonds together weighing approximately 42.70 carats, mounted in 18 karat white and yellow gold,length approximately 420mm. Estimation  5,500,000 — 6,500,000 HKD 

Accompanied by Gübelin and GRS reports numbered 12121037/1 to 37 and GRS2013-011474 respectively, dated 19 December 2012 and 11 January 2013, stating that the rubies are natural, of Burmese (Myanmar) origin, vivid red (GRS type "pigeon's blood") colour, with no indications of thermal treatment. Further accompanied by Gübelin note stating that the rubies are from the most famed Mogok Valley.

Sotheby's. Magnificent Jewels and Jadeite. Hong Kong | 07 Oct 2013