the reason people want to know if it has uranium is they don't want to get stuck with yellow glass that does not do tricks!! people love the part that it does tricks, as it is such a big change from daylight to blacklight.
Here is the kind you want: look up ebay item # 130126461722
It ships world wide, it is cheap, it works (i have several) and you can shine this little flashlight across the room and light up a piece of uranium glass! it will also shine through well lit display cases in an antique shop and 'show the glow' where the tube fluorescent ones will not work (the light gets washed out from the lighting in the display case).
IF you don't have a UV light source, take the piece out into bright, direct sunlight. if it glows a bright green (or at least, looks a lot brighter than indoors) it has uranium in it. it is catching UV rays from the sunlight. if you have a digital camera, use the flash feature, and when you look at the picture, the uranium version will look brighter than the non-uranium green glass.
the UV LED is made to register a certain area on the light spectrum. if it is not advertised as a UV, it will not do a thing. LEDs are made for different purposes.
Mr. Vaseline Glass
p.s. see my posting on 6/18: blue AND uranium glass! for a photo under UV of a very special piece of uranium glass.