An illuminated ball formed by two substantially identical mating elements. Each mating element has an exterior surface bounded by an edge, an annular surface joined to said exterior surface at the edge, two opposed radial recesses formed in the annular surface, a well abutting a portion of the annular surface and one of the recesses, and an alignment guide abutting a portion of the annular surface and the other of the recesses. The alignment guide extends away from the exterior surface and includes a hole therethrough in alignment with the recesses. The mating element is matable with a second, substantially identical mating element by the well of each mating element receiving the alignment guide of the other element. The channel formed by the cooperation of the recesses and holes of both mating elements is sized to contain a light source.