Ring with brilliant-cut diamond of approx. 2.16 ct (engraved),

Ring with brilliant-cut diamond ca. 2.16 ct (engraved), ca. WHITE (H)/SI2, slightly loose and further 14 brilliant-cut diamonds totalling ca. 1.5 ct, ca. WHITE (H)/VS-SI, (formerly with 15th stone at the top/edge), 18K white gold, 6.7 g, rijng size 50, replacement value ca. 22,000 €, 2nd half of 20th century, signs of wear, with unknown maker's mark.