An 18ct gold synthetic ruby and diamond ring, An 18ct gold synthetic ruby and diamond ring, the boat shaped head claw set with alternating round mixed cut synthetic rubies, and eight cut diamonds, to tapered shoulders and a light 'D' section shank, Birmingham 1918, 2.53g. Finger size L Buying this second-hand gemstone ring could save up to 0.42 tonnes of CO2e compared to buying new. Condition Report: Surface marks/scratches to mount. Wear to some of the claws. A crack to the shank through the hallmark.