1.2mm of thickness box chain made from fine 18k gold filled. Sizes Available:  Hypoallergenic jewelry. You may wear them while bathing, on the beach or in the pool. Fine 18k gold filled made to last. Have available the best jewelry components and supplies to create your own collection. Make your jewelry in a unique, modern and stylish way. With an unrivaled variety, at GoldFi you buy straight from the factory to your atelier. With a large inventory, we have available a selection with a variety of styles ready to be delivered to you immediately. You can choose from earrings, necklaces, pendants and charms, bracelets, anklets, rings, chokers, pearls and many other quality jewelry made from fine 18k gold filled.