A ring 800/1000 gold set with a cushion-cut "Ottu" sapphire from Ceylon weighing approximately 5 carats and 64 8/8 cut diamonds weighing approximately 1.10 carats. Portuguese Lisbon mark (1985-2020), maker´s mark of Oliveira Lopes & Almeida Ldª (reg. 1971) Dimensões (altura x comprimento x largura) - 16 (17,7 mm) cm; Peso - 6,2 g. Notes: VIDAL, Manuel Gonçalves; ALMEIDA, Fernando Moitinho de - "Marcas de Contrastes e Ourives Portugueses (1887 a 1993)", vol. II. Lisbon: IN-CM, No. 4092 and 4322.