A single stone aquamarine ring

A single stone aquamarine ring, the rounded end rectangular shape, step-cut aquamarine measuring approximately 28 x 12.8 x 9.8mm and weighing 28.39 carats, four claw set in platinum mount with three round brilliant-cut diamond set to each lift-up shoulder, hallmarked platinum London 2015, made by Bentley and Skinner, gross weight 16.4 grams.

No. X28744V