SEAMLESS RING AND MANUFACTURE THEREOF

PURPOSE:To provide a seamless ring and a manufacture therefor, by which decoration performance having three-dimensional impression is given regardless of low-cost rolling and mechanical working such as pressing and cutting. CONSTITUTION:Projecting parts 5 projected in the axial direction with the same width as the ring width are provided on one to four ring--shaped places, a part outside the projecting parts is taken as a ring part, a boundary line between noble metals 2, 3 of different kinds is parallel to both side edges of a ring in both the ring part and the projecting parts, and an axially stacked seamless ring is formed. A cut pattern, a mat part and/or circular glossy part are worked to form a ring where the sides of the parts are flush with one another, and then the ring is press-worked by a punch and a die. Thus, the projecting parts projected in the axial direction with the same width as the ring width are provided on one to four ring-shaped parts so that the boundary line is parallel to both side edges even in the ring projecting parts.