19 Piece Japanese crystal - Interlocking Puzzle
The 19 Piece 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. Its perfectly symmetrical multifaceted celestial structure is made out of 19 non-identical interlocking pieces. Each piece is precisely cut so that the pieces can interlock perfectly to make a solid structure.