Opalescent blue crystal dangle earrings | 14k gold-filled | October birthstone giftThese sparkling dangle earrings feature Caribbean blue opalescent crystals from Austria*, set into handcrafted 14k gold filled spirals. Whether you're celebrating an October birthday (opal is one of October's beautiful birthstones), or want to be reminded of the twinkling ocean, these earrings would make an ideal birthday gift or elegant accessory for any special occasion. Option to customise if you love this design, but would like a variation (e. g.