The 3D Crystal Puzzle Dolphin Deluxe from BePuzzled features uniquely-shaped, interlocking, translucent crystalline pieces that take puzzling to a whole new dimension. Delight your mind and eyes with this 3D brainteaser that's beautiful enough to adorn any room. When you've pieced it together, you'll be proud to display this sleek, unusual puzzle. Moderate difficulty, suitable for ages 12 and up. BePuzzled is more than just jigsaw puzzles. It's puzzle-plus. 7.5 x 7 x 2 inches.