Fine 13.75 carats Burmese Sapphire and Diamond Ring. Estimate 5,500,000 — 6,500,000 HKD (619,619 - 732,277 EUR). Photo Sotheby's

Centring on a step-cut sapphire weighing 13.75 carats, flanked on each side by step-cut diamonds together weighing approximately 2.20 carats, mounted in 18 karat white gold. Ring size: 6

Accompanied by Gübelin report numbered 13060196, dated 9 July 2013, and AGL report, stating that the 13.75 carat sapphire is natural, of Burmese (Myanmar) origin, with no indications of heating. 

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