Gold, diamonds. Fineness Au 750 / 1000. The upper part of the ring with five diamonds, cut in the shape of an old round brilliant cut, set in separate crowns. The total weight of three larger diamonds is about 1.70 ct. The total weight of three smaller diamonds is about 0.60 ct. . The color of all diamonds is balanced in the range G - H - I, purity VS2 - Si1. Marked - Czechoslovak hallmark, fineness 750, master mark IP. Ring size 48. Expert opinion from the Czech Republic, expert opinion from Germany (1994), expert opinion from the USA (1992).