Glows green under blacklight, has actual uranium in it, and somehow that's the normal part of this category. From vintage-style vaseline glass to handmade pieces from independent artists, these are the real deal: mildly radioactive, wildly collectible, and impossible to explain to people who've never seen it glow. Includes both traditional uranium glass and Ion borosilicate glass pieces for anyone who wants the glow without the geiger counter anxiety.