Details of diamond and shank :

central diamond measures approx 5.25mm x 5.27mm x 3.16mm , estimated weight 0.52metric carat ,  , colour assessed as H/I and clarity assessed as VVS/VS.

 Bordered by 12 round brilliant cut diamonds, each measuring an average throughout of 1.00mm . Total estimated  diamoned weight for the surround and shoulders combined - 0.51metric carat , colour assessed as H/I , clairty as VS . the shoulders have a raised millegrain border edge to a block retangular sectioned shank . The shank is tested as 18ct White gold  - inscribed "18k 750" 

Gross item weight 4.44 grammes.