first, three rubover set round brilliant cut diamonds, cenral diameter 3.5mm, estimated approximate total weight 0.30ct, tapered shoulders, 'D' shaped shank, size P, unhallmarked, stamped '18CT PLAT'; second, three illusion set round brilliant cut diamonds, central diameter 2.6mm, estimated approximate total weight 0.12ct, tapered chenier shoulders, 'D' shaped shank, size J, unhallmarked, stamped '18CT' settings tested as platinum, gross weight 4.5g (2)