A necklace with a pendant or charm in the form of a duck is referred to as a duck necklace. Different people may associate different meanings with duck necklaces. For instance, a necklace with a duck on it might be a representation of nature, capturing the grace and serenity of ducks swimming in a pond. Various materials, including metal, plastic, and even priceless stones, can be used to create the pendant. SEE MORE: Soulmate Necklace.