Abstract: An add-on jewelry item for attachment to flexible chains is disclosed in which the add-on item has an open back. The add-on item is capable of being attached by ordinary consumers to flexible chains, so that add-on jewelry items can be more easily employed and sold for lower cost because the skills of an expert jeweler will not be required to assemble and attach the add-on jewelry to the flexible chain. Numerous embodiments illustrating various ways of securing the add-on item to flexible chains are disclosed.