Charms Beaded Rectangular Platter. Size: 13.75Lx5.75W inches. Charms Collection Piece. Charms serving pieces are magnetic! Choose your favorite Mariposa Magnetic Charm (sold seperately) to attach and dress up this and other Charms serving pieces. Start your collection today!. Mariposa Charms Collection. Mariposa Gifts Tableware Serveware and More.