White polished gold, fineness Au 750 / 1000. Total weight 4,40 grams. Riviera type ring. Seven modern brilliant cut diamonds weighing approx. 0,40 ct, set on the front of the ring, colour G, clarity VS - Si. Ring size 56. Marked : Italian hallmark ( 750 and star ) , master mark 2605 AL, new Czech hallmark ( cock's head, number 3. ) . Alessandria, Valenza, Italy second half of the last century.