of tablet form, set with a central rubover set cushion shaped bright purplish blue sapphire, 7.7 x 7.6mm, estimated approximate weight 2.70ct, surrounded by a border of twenty four brilliant cut diamonds, estimated approximate total diamond weight 0.24ct, tapered chenier shoulders, 'D' shaped shank, size O, unmarked, tested as 18ct gold with platinum settings, weight 2.9g