I swear I have a link somewhere that shows some red uranium glass, but I can't find it at the moment.
I did find a long, dry patent I had bookmarked which talks about UV absorbant and fluorescent materials (and gives lots of "recipes"!). Some may find it interesting:
http://www.wipo.int/pctdb/en/wo.jsp?wo=2006120663&IA=WO2006120663&DISPLAY=DESCOne passage in particular talks about a number of rare earth metals and the colors they fluoresce:
"(a) Inclusion of praseodymium (Pr) in the soda lime glass composition gives a number of results depending on the light source, white light will give yellow green fluorescence, and U.V. or green/yellow light is reported to give orange fluorescence,
(b) Neodymium (Nd) fluoresces red yellow in soda lime glasses,
(c) Europium (Eu) will fluoresce either a brilliant red or a weaker green depending on the chemistry of the glass,
(d) Samarium (Sm) will also cause the glass to fluoresce giving pink/orange light but the total iron content of the glass needs to be low to prevent the effect being 'quenched'.
(e) Ceria will also fluoresce into the blue region, and this may be the one of most interest, but there are requirements to control the glass chemistry.
(f) Uranium also gives excellent green/yellow fluorescence in soda lime silica glasses but has issues for commercial uses because of its radioactivity. However, a lot of the citron yellow glass from the 50's and 60's is based on adding uranium to the glass."