A Solitaire Ring 800/1000 white gold set with brilliant cut diamond with an approximate weight of 6.80 ct., pure at magnifying glass and white with tint, P~Q colour degree and VVS purity Portuguese signs of use Oporto mark (1938-1984) Dimensões (altura x comprimento x largura) - 14 (17 mm) cm; Peso - 6,2 g. Notes: Provenance: Jewelry collection of a soprano opera singer of the São Carlos National Opera House, Lisbon.