Christie's, Geneva, May 2006 Lot 200 A Ruby and Diamond Ring The oval-shaped ruby weighing 7.24 carats to the tapered baguette-cut diamond shoulders, ring size 5¼, with French assay mark for gold Accompanied by report no. GRS2004-071089 dated 28 July 2004 from the GRS GemResearch Swisslab stating that the ruby is of Burmese origin, no indication of thermal treatment
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