Clip-pendant with oval opal 17x13 mm, treated, with crack, surrounded by 32 single-cut diamonds totalling ca. 0.8 ct, ca. WHITE (H)/VS (3 stones with nicks), hnadcrafted in 18K yellow and white gold, clip-loop made of 14K yellow gold, 7.4 g, 2nd half of 20th century, minor signs of wear.