Lot 415. 19.43 carats Burmese cushion-shaped sapphire and diamond ring. Estimate 195,000 — 290,000 CHF (178,214 - 265,036 EUR). Photo Sotheby's

Claw-set with a cushion-shaped sapphire weighing 19.43 carats, between shield-shaped diamond shoulders,size 52, sizing band.

Accompanied by SSEF report no. 80457, stating that the sapphire is of Burmese origin, with no indications of heating.

Sotheby's. Magnificent Jewels and Noble Jewels, Geneva, 17 May 2016, 10:00 AM