US Patent 11607017 Fastening element for costume jewellery and/or jewellery items

A fastening and/or connection device makes it possible to fasten jewellery and/or costume jewellery items. Each item includes a first free end and a second free end that are joined together. The device includes a first portion to connect to the first free end of the item and a second portion suited to be connected to the second free end of the item. The device includes a main body, first connection means suited to place the main body and the first portion in a disengaged operating configuration or in an engaged operating configuration. A second connection means places the main body and the second portion in a disengaged operating configuration or in an engaged operating configuration.