This jewelry extender chain is crafted from solid 18k gold, marked G18K/AU750, not merely plated. It is nickel-free, lead-free, and hypoallergenic, ideal for sensitive skin. It will not discolor skin green or red. The highly polished surface provides a lasting shine. This durable yet delicate extender lengthens necklaces, chokers, bracelets, or anklets. Sold separately, choose from lengths: 1inch, 2inch, 3inch, 4inch, 5inch, or 6inch. Note the extension chain is small but strong, not suitable for very thick chains. It features a secure lobster clasp for easy attachment. Enjoy your jewelry comfortably year-round. Each piece arrives carefully packed in an exquisite jewelry box, ready for gifting.