Lot 529. Attractive 12.25 carats Burmese ruby and diamond ring. Estimate 140,000 — 230,000 CHF. Lot sold 350,500 CHF. Photo: Sotheby's 2012 Claw-set with a sugarloaf cabochon ruby weighing 12.25 carats, between triangular diamond shoulders, size 521/2....

Ruby and diamond ring. Photo: Sotheby's. Centring on a sugarloaf cabochon ruby weighing 8.78 carats, surrounded by pear-shaped diamonds together weighing approximately 4.15 carats, embellished by brilliant-cut rubies together weighing approximately 1.45...