The Red Ruby 3D Crystal Puzzle is gorgeous enough to adorn any room. It is a sleek, translucent, crystalline puzzle with 43 unique interlocking pieces. When you've pieced it together (be ready for a challenge), its brilliance will have you wishing you could wear it. This 3D puzzle has a difficulty level of 1. Assembled puzzle measures approximately 2.75 x 2.75 x 2 inches.