Exceptional and rare ruby and diamond ring. Phote Sotheby's

Claw-set with an oval ruby weighing 7.66 carats within a border of brilliant-cut diamonds, size 51, sizing beads. Lot 723. Estimate 500,000-685,000 CHF

Accompanied by SSEF report no.62106, stating the ruby is of Burmese origin, with no indications of heating. Further accompanied by SSEF appendix stating: ' This natural ruby (...) possesses extraordinary characteristics and merits a special mention and appreciation. The described gemstone (...) exhibits a vivid colour with an outstanding purity and an attractive cutting style. (...). A natural ruby from Burma of this quality is rare and exceptional.

Sotheby's. Magnificent Jewels and Noble Jewels; Geneva | 14 May 2012, 11:00 AM www.sothebys.com