A single stone diamond ring

A single stone diamond ring, the round brilliant-cut diamond accompanied with a GIA report number 2145301140, stating the diamond to weigh 0.57 carat, of H colour and VS2 clarity, to a six claw-setting in a heart-shaped collet platinum mount with tapered shoulders, hallmarked platinum London 2014, bearing the Bentley & Skinner sponsor mark, gross weight 3.1 grams,

No. 25878V