A Ring platinum set with antique brilliant cut diamond with approximate weight of 2.35 ct., M~N colour degree and clarity VS1 Portuguese 20th C. (mid) signs of use without marks, pursuant to Decreto-Lei No. 120-2017 of 15 September – art. 2nd, paragraph 2, point (c) Dimensões (altura x comprimento x largura) - 10 (15,7 mm) cm; Peso - 4,6 g. Notes: Provenance: Jewelry Collection of a Soprano of the São Carlos Nacional Opera House, Lisbon.