A ring 500/1000 platinum set with 24 brilliant-cut diamonds weighing approximately 1.20 ct. and the central one with an approximate weight of 1.97 ct. Portuguese Lisbon mark (1938-1984), Carvalho & Castro Ldª makers' mark (1951) Dimensões (altura x comprimento x largura) - 11 (16 mm) cm; Peso - 5,5 g. Notes: vd. VIDAL, Manuel Gonçalves; ALMEIDA, Fernando Moitinho de - "Marcas de Contrastes e Ourives Portugueses (1887 a 1993)", vol. II. Lisbon: IN-CM, 1996, Nos. 94, 109 and 3196.