the opal eye necklace in sky blue features a 0.5 inch, 18k gold-plated eye charm with shimmery pearlescent white enamel & a stunning & unique synthetic opal. available in several color variants. details 15 in. 18k gold filled chain lobster clasp closure features lilly signature backstamp. Opal Eye Necklace in Sky Blue, 18K Gold Plated Pearlescent Enamel Charm, Filled Dainty Pretty Chain Cute Unique Gem Jewelry