Ring set with faceted emerald approx. 7.8 x 6.6 x 4.8 mm, approx. 1.7 ct, 2 brilliant-cut diamonds totalling approx. 0.30 ct, approx. WHITE - STW (H - I)/VS and 20 navette-cut diamonds totalling approx. 2.4 ct, approx. WHITE - STW/ (H - J)VS - SI, platinum 950/000, 12.9 g, ring size 55, 2nd half of 20th century, visible change in ring size, ring band not round.