Swivel ring with a two-faced octogonal bezel. One side displays an old mine diamond from the 19th century, while the other side features a hexagonal ruby surrounded by a red enameled flaming star and black enameled oak leaves. Diamond-set inlays of white gold run along the sides of the bezel made of yellow gold. The mural paintings of the Florence Baptistery inspired the black enemaled ornaments of the ring hoop.