Five delicate opal charms dangle from a chain necklace; Opal; 14K yellow gold; 16-18"L; Lobster clasp closure; Almost all gemstones and blue and black diamonds have been treated to enhance their beauty and require special care.; Photo may have been enlarged and/or enhanced.; All gemstone carat weights (tcw) are approximate; variance may be 0.05 carat.; Opal is a birthstone for October; This item is part of our 100% Bloomingdale's collection, featuring exclusive pieces you won't find anywhere else.; Gemstone Treatment and Care; Imported