14k Gold Filled Ethiopian Opal Smooth Gemstone Beaded Goldtone Chain Link Necklace 18" Beautiful smooth cut Ethiopian Opals; Rainbow colors flash greens, pinks, blues Easy on clasp is 14k Gold Filled; goldtone wired chain link Gemstones 3.5-4.0mm in size; Simple design Over 50 gemstones Great delicate dainty everyday necklace