Me interesó tu post y me puse a investigar. Parece ser un concepto nuevo en joyería creado por Jennifer McCormack. A una pieza de joyería se le crea otra que es desmontable y "engancha" con la original, vistiéndolo y creando una pieza completamente nueva y original. Se les llama "party jackets".

"McCormack will take an existing ring and create an outer shell that snaps easily over it, with additional stones, intricate metalwork, or even moving pieces to catch the light. Bigger brands, such as Jared the Galleria of Jewelry or Kay Jewelers, sell rings that combine two pieces in one—a solitaire for everyday wear and a matching shell for when the wearer wants to spice things up. The same trend exists in earrings: A pair of studs can be augmented with tassels, bangles, or even a frame of smaller stones."