31 août 2017
Sapphire and diamond ring
Lot296. Step-cut sapphire weighing 30.93 carats and diamond ring. Estimate £40,000–60,000 . Photo: Sotheby's. Claw-set with a step-cut sapphire weighing 30.93 carats, the mount accented with single-cut diamonds, size G, indistinctly numbered, French assay...