742 - A topaz, peridot and diamond ring

A topaz, peridot and diamond ring Gold, fineness .800 Set with an oval-cut topaz, a cabochon-cut peridot and approximately 43 brilliant-cut diamonds weighing approximately 0.45 ct. Porto hallmark (1985-2020), goldsmith's mark of Manuel António da Costa Santos & Filhos Ldª-ARTEJOIA (reg. 1966) Size: 13 (EU) 6.5 g VIDAL, Manuel Gonçalves; ALMEIDA, Fernando Moitinho de - "Marcas de Contrastes e Ourives Portugueses (1887 a 1993)", vol. II. Lisbon: IN-CM, no. 4093 and 3990