Mermaid Charms, Pendants and Mermaid Jewelry Findings - We hope you'll find something to 'dive over' in our Enchanting Mermaid Jewelry Collection. These mystical sea-dwelling creatures are commonly represented as having the head and body of a woman and a fishtail instead of legs. Belief in mermaids, and in their counterpart, mermen, has existed since earliest times. They are often described as having great beauty and charm. In some legends they assumed human shape and married mortals.