Finished: It’s the size of a file folder.
My daughter worked the puzzle in her room, so it didn’t initially glow. We carried it outside, let it sit in direct sunlight for 5 minutes. Then, we brought into a darkened room.
As you can see, it did glow.
My advice, unless you plan to transfer it back and forth from sunlight, make sure your table space gets direct sunlight.
This puzzle was gifted to my daughter, but I’m sure you can purchase it from Ceaco’s website.
🧩 Happy Puzzling!! 🧩