Materials: Shards are encased in resin and framed in a petite round (10x7mm) or oval (11x6mm) 24K gold plate or .999 fine silver bezel. Earring hooks are sterling silver or 14K gold-filled. (Our earring parts do not contain nickel). Upon request we can change our hooks into screwback earrings (brass parts) for those without pierced ears. Chains are sterling silver or gold-filled 18." To request a 16" or 20" chain, please use the comment box in cart prior to checkout.