A ring

A ring, 950/1000 platinum, set with an antique brilliant cut diamond with the approximate weight of 3.84 ct., colour grade, J~K and VVS purity, French, 20th C. (mid), signs of use, warranty mark, without Portuguese marks pursuant to Decreto-Lei nº 120/2017, of September 15 - art. 2, paragraph 2, letter c), Dim. - 12 (16,5 mm) cm; Peso - 4,9 g.