The Green T-Rex Deluxe Crystal Puzzle features a fierce, fearless design. It is a sleek, translucent, crystalline puzzle with 49 unique interlocking pieces. When you’ve joined the interlocking plastic pieces together (be ready for a challenge), its glossy, sleek design will impress all who see it. Deluxe Crystal Puzzles are our largest, most challenging Crystal Puzzle designs. This 3D puzzle has a difficulty level of 3. Approximate assembled size = 5-1/2″ x 4″ x 5″.