A ring 800/1000 gold set with a rectangular-cut aquamarine weighing approximately 22.30 carats and 8 square-cut diamonds weighing approximately 1.20 carats Portuguese Lisbon mark (1985-2020), Oliveira Lopes e Almeida Ldª maker's mark (reg. 1971) Dimensões (altura x comprimento x largura) - 14 (17 mm) cm; Peso - 17,6 g. Notes: vd. VIDAL, Manuel Gonçalves; ALMEIDA, Fernando Moitinho de - "Marcas de Contrastes e Ourives Portugueses (1887 a 1993)", vol. II. Lisbon: IN-CM, 4093 and 4322