A Ring 750/1000 gold set with 77 brilliant cut diamonds with an approximate weight of 3.70 ct. Portuguese, signs of use Lisbon mark (post-1985) Dimensões (altura x comprimento x largura) - 12 (16,5 mm) cm; Peso - 30,7 g. Notes: Provenance: Jewelry Collection of a Soprano of the São Carlos National Opera House, Lisbon.