I created this using Stella 4d, which is available (including a free trial download) at http://www.software3d.com/Stella.php. It can also be viewed as a compound of the rhombic dodecahedron and another polyhedron, but I haven’t been able to identify that second polyhedron — at least, not yet. If you know what the orange polyhedron is, please leave a comment with its name.