Charles of Florida handcrafts each collar necklace from his signature nickel-free, lead-free, and hypoallergenic metal alloy. Harvested from the shells of sea snails, each piece of gorgeous, richly-colored abalone is breathtaking and unique. To care for this jewelry, use warm soapy water and a dry cloth to clean it. Do not use liquid jewelry cleaners or polishing cloths, as this may compromise the lacquer. Handcrafted for Uno Alla Volta, from the heart and hands of the artisan. Dimensions - 1.75'' pendant, adjustable collar.