A ring 500/1000 platinum set with 12 navette cut diamonds, 10 8/8 cut diamonds and the central brilliant cut diamond with the approximate weight of 3.74 ct., colour grade G, purity VVS1 and low fluorescence Portuguese signs of use Lisbon mark (1938-1984), LEITÃO & IRMÃO makers' mark Dimensões (altura x comprimento x largura) - 14 (17 mm) cm; Peso - 7,5 g.