There are lots of materials to use when making pyramid puzzles. Crystal is an excellent choice. The 3D Crystal Pyramid puzzle consists of 15 pieces and a base to construct it on. There are 4 different shaped and sized pieces. Each piece is hollow. When completed, and you shouldn’t have too much trouble; it makes an interesting piece to display. It is very durable, and the pieces are not likely to break. The only thing that could happen is if pieces get lost. Once again, a puzzle that looks inviting rather than intimidating and can be enjoyed by, young and not so young, alike. As to difficulty; I would give it 2 out of 10.
The package gives this for I.Q. Rating.
60 minuted……Above Average
You can purchase this puzzle at Puzzle Master