6 septembre 2015
A sapphire and diamond ring, by Boucheron
A 7.54 carats Burmese sapphire and diamond ring, by Boucheron. Estimate £40,000 - 60,000 ( €55,000 - 82,000) . Photo: Bonhams. The rectangular step-cut sapphire, weighing 7.54 carats, between tapered baguette and brilliant-cut diamond shoulders, signed...