Despite the name, the Pyraminx Crystal is a dodecahedral puzzle, very unlike the Pyraminx. It is a face-cut dodecahedron, like the Megaminx (but unlike the vertex-cut tetrahedral Pyraminx). The main difference is that the cuts are deeper, resulting in a pattern of triangles and kites on each face rather than the pentagram-based face configuration of other dodecahedral puzzles.
It has been sold by Meffert's since February 2008. It is also possible to emulate in Ultimate Magic Cube; use a cut depth of 99 and an increased erase threshold. It may also be necessary to increase the line thickness slightly.