A ring

A ring, 800/1000 gold and 500/1000 platinum, set with Colombian emerald (12.2 x 12 x 7.5 mm) with the approximate weight of 8 ct. and 16 brilliant cut diamonds with an approximate weight of 1.9 ct., Portuguese, signs of use, traces of handling, Lisbon mark (1938-1984), Carvalho & Castro Ldª maker’s mark (1951), Dim. - 12 (16,5 mm) cm; Peso - 10,2 g.