This is a modern sapphire and diamond cluster ring that is set with an oval star sapphire in a cabouchon cut that measures approx. 8.20mm x 7.20mm x 4.58mm deep.  There is a surround of 16 brilliant cut diamonds, each diamond measuring approx. 1.70mm diameter and grain set to a millegrain border.  The shoulders of the ring are tapering and rise to the ssetting and the band is a plain polished "D" shape.
 
The ring was hallmarked as 18ct white gold in Londond 2012.  The estimated weight of the star sapphire is  2.2ct, with colour assessed as medium/greyish blue and with angular colour zoning present.  The estimated total diamond content is 0.32ct, with colour assessed as G/H and clarity assessed as VS. 

Weight of the ring is 4.92gms.  The finger size is 6 3/4 (US/Canada); N1/2 (UK/Australia) though some resizing is possible. We would resize the ring in our workshop.