16 1/8" long, 3mm thick figaro chain necklace with a 2" extender. Tarnish resistant jewelry you don't have to take off. Continuous wear while maintaining its finish. GOLD: Not to be confused with regular gold plated jewelry– this is a long-lasting, durable layer of rich, 18k gold over high-quality stainless steel. 100% hypoallergenic materials that do not contain nickel or lead. No copper, brass, or any other metals prone to oxidation, so you won't turn green. SILVER: A stunning, highly durable stainless steel with all the same perks of our gold pieces. To give jewelry its longest life possible, please take care of it properly.