Christie's, Geneva, May 2006

Lot 31 A Ruby and Diamond Ring

The oval-shaped ruby weighing 3.29 carats within a baguette-cut diamond surround to the brilliant-cut diamond shoulders, mounted in platinum, ring size 6½

Report no. GRS2006-011077 dated 18 January 2006 from the GRS GemResearch Swisslab stating that the ruby is of Burmese origin, no indication of thermal enhancement
According to the latter report the ruby is classified as 'GRS type "pigeon's blood" vivid red'