A Ring 800/1000 gold and 500/1000 platinum set with 34 rose and antique brilliant cut diamonds and an antique brilliant cut central one with an approximate weight of 1.90 ct., grade of colour K ~L and P1 clarity Portuguese signs of use Lisbon mark (1938-1984), LEITÃO & IRMÃO makers' mark Dimensões (altura x comprimento x largura) - 7 (15 mm) cm; Peso - 7 g. Notes: Provenance: Jewelry collection of a soprano opera singer of the São Carlos National Opera House, Lisbon.