There must be uranium all over my bedroom and computer chair since it glows in black light too.
Don't invite me to dinner.
I've got a little trick that'll give the same results, also it doesn't require uranium.
Dangerosity: very low. Usefulness: zero.
For those interested, yes this glas really does contain uranium in very small amounts. Since uranium is an alpha emitter this glass does not pose a relevant health-risk since alpha-particles are easily blocked by a sheet of paper or the top layer of our skin, so the vast majory of the radiation would not even leave the glass. It can become an issue if you ingest small splinters and the radiation source can come into direct contact with your soft tissue. Another issue, especially with larger collections is, that the decay products of uranium can be gasses like radon, which can accumulate in badly ventilated rooms and you inhale them.
This is why you read the books people… The dead men of Dunharrow worked at a nuclear reactor