  | The HexaQube is the result of an intersection of a
    star rhombic dodecahedron and an ordinary cube.  | 
    | To assemble it you have to put together two groups
    of parts consisting of three pieces each. | 
    | The HexaQube is a member of The
    Magic Crystals family which means that it's parts can be used in combination with
    pieces from any other family member. 
      | 
    | It has a hollow cube shaped cavity inside of it, so
    to some extent it's a Box Puzzle. | 
    | The cavity inside can be made in a form of an
    octahedron, too. In this case the puzzle suddenly transforms into "HollowQube"
    and becomes a member of The Hard Nut family. |