653
A quartz and diamond gold ring
Estimate
1.600 - 2.600
Session 2
21 July 2026
Description
Gold, fineness .800
Set with a cabochon-cut quartz and 57 brilliant-cut diamonds weighing approximately 0.70 ct.
Porto hallmark (1985-2020), goldsmith's mark of Manuel António da Costa Santos & Filhos Ldª-ARTEJOIA (reg. 1966)
Med.: 16 (EU)
12,8 g
Additional Information
Provenance:
Exhibitions:
Literature:
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
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