This stunning necklace features a pendant displaying blue opal; Opal: 1.01 total carat weight; 14K yellow gold; 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.; Made in Spain