Russian, c. 1920. 14 ct. redgold. Controlmark of the UdSSR of 1927-58 and of Warsow for 583 gold since 1963. One cushionshaped diam. in old cut of c. 0,70 ct. I-N.vvsi-vsi. Expertise of the Gemmologischen Instituts Hamburg with replacement value of c. 2.800,- Euro. (Comp. Divis, no. 675, 751). Size 56, weight c. 6 g.