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 wooden pieces into a diamond shape. To make it even easier, triangular markings on four of the pieces give you a good clue as to where some of the pieces should go. So, you’re probably looking at, say only 99 million years! Composed of eleven small wooden pieces.