Diogo's Crystal Puzzle

Geometry:
Diogo's Crystal is a puzzle based on geometry developed by Diogo Sousa. The shape is similar to my previous Madness Plus puzzle, but has been altered to create equal dihedral angles at the upper and lower sets of vertices. This allows the three side faces (rhombic faces) to have jumbling interactions with the other six faces, creating more opportunity for scrambling. This is also the same geometry that Diogo used to make his previous Hexapod puzzle.

Other Items Needed:
Dye: If you want the puzzle to be black, you can dye the pieces yourself with a nylon dye such as RIT or Dylon, or you can have Shapeways dye the parts for you for an extra charge.
Stickers: Template available in the tips & how-tos forum. If you want professionally cut stickers, I recommend Oliver’s Stickers or Chewie's Custom Stickers.
Screws: Nine12mm M3 pan head screws required, available in hardware stores or on the web.
Springs: Nine springs needed, available in web puzzle shops. I get mine from HK Now Store.

Degree of Difficulty:
Assembly: Easy to assemble.
Solving: Very difficult to solve.

Playability:
Diogo's Crystal turns very nicely, and the mechanism is stable.

Have fun!