7 septembre 2015
A sapphire and diamond ring, circa 1930
A 6.93 carats Basaltic sapphire and diamond ring, circa 1930. Estimate £7,000 - 9,000 ( €9,600 - 12,000 ). Photo Bonhams. The octagonal step-cut sapphire, weighing 6.93 carats, within a cartouche decorated with square, baguette and single-cut diamonds,...