Ladies finger ring with ring head in the form of an abstract knot, this set with a central ruby with a diameter from approximate 4, 0 mm, approximate 0, 24 ct, and four small octagonal diamonds to a total of approximate 0, 06 ct. 585 yellow gold, stamped. Diamond mountings in WG. Ring size: Germany: 53; USA / Canada: 6.6; Great Britain: M2; France: 13. Approximate. 2, 70 large purchase certificate from 23.02.1981 including diamond certificate exists.