An important ruby and diamond ring

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An important 11.01 carats cushion-shaped Mogok, Burma ruby and diamond ringEstimate CHF770,000 – CHF1,150,000 ($785,882 - $1,173,719). Photo Christie's Image Ltd 2015

et with a cushion-shaped ruby, weighing approximately 11.01 carats, between baguette-cut diamond graduated shoulders, ring size 6, mounted in platinum and gold

Accompanied by report no. 14110260 dated 27 November 2014 from the Gübelin GemLab stating that the origin of the ruby is Burma (Myanmar), with no indications of heating, and an Information Sheet on 'Rubies from Mogok, Burma'.
Report no. 60569 dated 12 September 2011 from the SSEF Swiss Gemmological Institute stating that the origin of the ruby is Burma (Myanmar), with no indications of heating.
 

Christie's. GENEVA MAGNIFICENT JEWELS, 10 November 2015, Geneva