The Treasure Chest 3D Crystal Puzzle from BePuzzled looks like it came off an old pirate ship! It is a sleek, translucent, crystalline puzzle with 52 unique interlocking crystalline pieces, including key. When you’ve pieced it together (be ready for a challenge), the key will open and close this colorful, sleek treasure chest. You’ll be proud to display this sleek, unusual puzzle, and can even store tiny items in it. This 3D puzzle has a difficulty level of 2. Approximate assembled size = 3-1/8" x 2-3/8" x 2-1/2" when closed, 4" when open. Also available in gold.   Delight your mind and eyes with our Original 3D Crystal Puzzles. These three-dimensional brainteaser puzzles are enjoyable to work on, challenging to complete, and beautiful to display. They take puzzling to a whole new dimension and are recommended for puzzlers age 12 and up. There are designs to match anyone's interests and are fun to collect. BePuzzled is the exclusive distributor of Original 3D Crystal Puzzles in the United States.