A cultured pearl, peridot and diamond necklace, composed of a strand of cultured Tahitian South Sea pearls, measuring approximately 11.27 x 11.14 mm, centering an oval-shaped peridot, weighing approximately 21.87 cts, flanked and accented by round brilliant-cut diamond detail, signed white, estimated total diamond weight 1.22 ct, mounted in 18ct gold, length 470 mm