Lot 129. A 7.13 carats Kashmir 'Royal Blue' sapphire and diamond cluster ring. Sold for £506,500 (€643,640) inc. premium. Photo Bonhams. The cabochon sapphire, weighing 7.13 carats, within a surround of old brilliant-cut diamonds, diamonds approximately...

A sapphire and diamond cluster ring. Photo: Bonhams. The cut-cornered step-cut sapphire, weighing 3.91 carats, within a brilliant-cut diamond border, diamonds approximately 1.20 carats total, ring size J. Estimate £9,000 - 10,000 €11,000 - 12,000) Accompanied...

A sapphire and diamond cluster ring. Photo: Bonhams. The oval-cut sapphire, weighing 6.59 carats, within a cluster of old brilliant-cut diamonds, diamonds approximately 1.00 carat total, ring size N. Estimate £10,000 - 12,000 (€12,000 - 14,000) Accompanied...