An 18ct gold cornflower blue sapphire and diamond ring, centring on an oval mixed cut cornflower blue sapphire, 6.70mm x 5.10mm, claw set to the centre and flanked by diamond trefoil cluster, to knife-edge shoulders and a plain band. London import hallmark 1990, 2.99g Ring size N Buying this gemstone ring at auction could save up to 0.42 tonnes of CO2e compared to buying new. Condition Report: Sapphire showing inclusions typical of natural origin. A few surface scratches to mount, commensurate with its age. No wear to the diamonds and sapphire.