A white gold sapphire and diamond crossover ring, with a principal round brilliant cut diamond, claw set, surrounded by a cross-over row of smaller round brilliant cut diamonds and round faceted blue sapphires, all claw set, in tested 18ct white gold, 7.50g Ring size O½ Provenance: Maurice 'Dick' Turpin, Barons Keep, London W14. Buying this gemstone ring at auction could save up to 0.42 tonnes of CO2e compared to buying new.