Approx. Ø17mm, RG54, approx. 7,3g, 18K white gold, ring head approx. 20 x 17mm, central a dazzling opal cabochon with beautiful play of colors, rose and green tones, approx. 11 x 9mm, approx. 3,1ct, bordered by 12 fine brilliants of high quality, furthermore the ring shoulders are also set with brilliants, the diamond weight of approx. 2,159ct is engraved in the rail, very high quality and tasteful goldsmith work.