Japanese Crystal Puzzle - 51 Piece Japanese Interlocking Puzzle
The Japanese Crystal Puzzle is based on the historical design called "Japanese crystal" first created in Japan around the 19th century. This beautiful and intriguing puzzle is one of the most challenging puzzles in our construction puzzles collection. It's perfectly symmetrical multifaceted celestial structure is made out of 51 non-identical interlocking bar pieces. Each piece precisely cut so that the pieces can interlock perfectly to make a solid structure.