Media could not be loaded. It was easy to make a rainbow out of this prism. We just shined a flashlight on it and moved it around a bit, and voila! It collects fingerprints terribly, which is to be expected. So I recommend using one of those little microfiber cleaning cloths that come with your glasses, jewelry, or computers. It entertains not only my kids but me too. I paid full price for this item. All opinions are my own.