Giant crystal puzzle

This puzzle, with its perfect symmetry and multifaceted structure, consists of 51 pieces. Each piece is precisely cut so that the pieces can fit together and lock together perfectly. Once the puzzle is complete, no piece can easily fall apart.

Once the puzzle is assembled, no piece can come out straight, so part of the challenge is to disassemble the puzzle. As with some of the other puzzles, the solution lies in rotating a particular piece.

This is a challenging puzzle that also serves as a spectacular decoration.