Gold, silver, emerald, diamonds. Ring, lower half crown, made of gold. Fineness AU 860/1000. Net Weight 2.20 grams. The upper part of the crown is silver, with the fineness of AG 980/1000. Net weight 0.80 grams. The total weight of the ring is 3.30 grams. Crown of square shape. Diamond-embossed diamonds, circular brilliant cut, 0.35 ct. In the middle of the embossed emerald square square with a weight of 0.31 ct. Ring size 53. Central Europe in 1910 - 1940. The certificate of the Assay Office. Expert opinion.