Canturi, emerald and diamond ring, 18ct yellow and white gold, bezel set with a fine natural Zambian emerald cut emerald, weighing approx 1.35cts, channel set with princess cut diamonds to the shank, F colour and VS and Si clarity weighing approx 0.50cts in total, signed 'Canturi, 750', size M 1/2, total weight 5.5 grams,