US Patent 7409837 Interchangeable jewellery insert and item for receiving the insert

An interchangeable jewelry insert having an extension formed of elastic material that can frictionally engage a surface of a receptacle for receiving the insert. The interchangeable jewelry insert may be detachably attached to any item that can be configured to have a receptacle for receiving the insert. The extension of the interchangeable jewelry insert is sized for convenience of handling and storage. The use of an elastically deformable extension extending, at two or more points having sufficient angular separation, from the periphery of the body of an insert allows for a secure fit within the receptacle, while maintaining a convenient connection system that can be manipulated by manual forces of a jewelry wearer.