A Solitaire Ring 800/1000 white gold set with brilliant cut diamond with an approximate weight of 2.90 ct., L~M colour grade and VVS purity Portuguese signs of use Lisbon mark (1938-1984) Dimensões (altura x comprimento x largura) - 12 (16,5 mm) cm; Peso - 4,1 g. Notes: Provenance: Jewelry collection of a soprano opera singer of the São Carlos National Opera House, Lisbon.