Lot 271. A sapphire, amethyst and diamond ring, by JAR. Estimate CHF350,000 – CHF550,000 ($383,838 - $603,175).Price realised CHF 725,000. © Christie's Image Ltd 2015

The entwined diamond and amethyst cords holding an oval-shaped sapphire, to a similarly-set diamond double hoop, mounted in platinum and silver, 1988, ring size 2½ - Signed Jar 

Accompanied by report no. 14060233 dated 8 July 2014 from the Gübelin GemLab stating that the sapphire is of Burmese origin, with no indications of heating 

Literature: JAR I, Exhibition at Somerset House, London, November 2002-January 2003, no. 234 

Exhibited: The Jewels of JAR, Paris, Somerset House, London, November 2002 - January 2003 

Christie's. MAGNIFICENT JEWELS, 13 May 2015, Geneva