Oh, I'm glad to hear about that from you three! I've asked others whether they notice the same thing - their glass glowing at dawn and dusk - and never really got a very good answer. I've only had a few pieces of uranium glass, mostly green, and I thought I saw it glow a bit, too.
Even apart from the fact that it can glow without a special bulb, I think it's a really nice colorant. When considering the expense of using it there are a lot of unknowns. It might not have been so expensive relative to other colorants back when it was common, and it's possible it was easier to work with or had some other effect on glass quality that we (or I, anyway) are unaware of. Otherwise it's hard to imagine why it was so common in green Depression glass, which by and large was inexpensive.
Has anyone come across any advertising that mentions its glowing properties?
ON TOPIC: The shape of Bernard's piece is really bugging me because it looks so familiar, but I can't place it. I've looked through Truitt's vol. 1 and couldn't find anything similar in terms of shape or decoration. To me the style is more delicate, with finer lines, than typical Bohemian enamel work - but of course, that varied widely. It reminds me of some Mt. Washington glass, but I haven't found a match. I do have something very similar that was attributed to Mt. Washington in an archive of glass photos I've gleaned from the internet, but it's hard to know how good the attribution is. I wish I could post it! The style of decoration is the same, right down to the addition of bits of glass. ...Just found another MW-attributed one in my photos that has some of the same decor. Maybe there's something to it! I'll go look at my CMOG photos now.