A Ring 750/1000 gold set with a round cut Ceylon sapphire with the approximate weight of 3 ct. and 8 brilliant cut diamonds with an approximate weight of 0.16 ct. Portuguese, signs of use Lisbon (post-1985) Dimensões (altura x comprimento x largura) - 13 (16,7 mm) cm; Peso - 15,5 g. Notes: Provenance: Jewelry Collection of a Soprano of the São Carlos National Opera House, Lisbon.