The Diamond Cube
All diamonds are at least 990000000 million years old and formed under intense heat and pressure 100 miles below the earth's surface. Luckily you'll have the liberty to perform a similarly act with this intensely challenging puzzle at your leisure - maybe even in an air-conditioned room! But be warned: you might need just as much time! Well, to make things easier instead of forming carbon into diamond crystal, you'll only need to assemble the 12 wooden pieces into a diamond shape.