Lot 316. Collection of H.S.H. Gabriela Princess zu Leiningen. An important 21.06 carats Burma octagonal step-cut sapphire and diamond ring, by Cartier. Estimate CHF650,000 – CHF750,000 ($685,412 - $790,860). Price realised CHF 797,000. Photo Christie's Image Ltd 2016

Set with an octagonal step-cut sapphire, weighing approximately 21.06 carats, between baguette-cut diamond shoulders, ring size 6 ½, with French assay mark for platinum. Signed Cartier, no. 847537

Accompanied by report no. 16030061 dated 16 March 2016 from the Gübelin GemLab stating that the origin of the sapphire is Burma, with no indications of heating, and an Information Sheet on 'Unheated sapphires'

Further accompanied by copy of an invoice dated 28 December 2000 from Cartier.

Christie's. GENEVA MAGNIFICENT JEWELS, 18 May 2016, Geneva