Yopay 5 Pack Crystal Prism Set, K9 Glass Optical Photography Prism Set, 50mm Lens Ball/50 mm Cube/50mm Triangular Prism/50mm Prism Pyramid/ 50mm Crystal Ball for Kid, Science, Teaching Light Spectrum

The two most refractory are the dodecahedron and the traditional prism. The other ones don’t really reflect rainbows, but these two do combined with the rabbit goo window film. I get just this glory of rainbows every morning so lovely.

I highly recommend getting this set.

These are total fun and I just turned 70

Here we have five prisms of various shapes along with a cloth to wipe your fingerprints off with after handling.These crystal/glass shapes are great either as decorative paperweights (except for the sphere, which rolls) or as desk toys. They could theoretically have educational use as well to observe light bending.They are "crystal" clear, though my cube had a couple of miniscule air bubbles- nothing you'd likely notice if not closely inspecting. Most of the hard edges are beveled, which makes them safer and I'm assuming less chip-prone in the event of a fall, though the points on the pyramid, especially the top point, feel a bit sharp, so be careful.It would have been nice if a small stand had been included for the sphere since it otherwise won't stay put well on a level surface, but otherwise I have no complaints. Be aware that the triangular prism (not the pyramid, mind you) may seem rather small in comparison to the rest.Thanks!

Larger than expected. Very happy

Son bonitas y muy curiosos te puedes imaginar muchas cosas y hacen arcoiris

These are so pretty, smooth, reflect, but I wish there was a way to suspend them so they would refract light.

I received a flawed pyramid prism which contained a bubble. Normally, I'd just order a replacement and swap out the part when it got here, so that's what I did. Then, the replacement had a bubble in it. I'm too tired to try a third time, so I'm returning both orders. Just know there seems to be either a high chance of getting flawed parts, or I'm just very unlucky.