An aquamarine and diamond ring

An aquamarine and diamond ring, the emerald-cut aquamarine weighing 4.26 carats, four claw-set to the centre of two tapered baguette-cut diamonds weighing a total of 0.17 carats, all set in platinum to a tapered D-section shank, hallmarked platinum, London 2007, bearing the Bentley & Skinner sponsor mark, gross weight 5.5 grams

No. 28280V