Blue

[Steph]

A favorite UV glow color.  Phone camera made it too bright and added a bit of aqua.    So blue it up in your mind!   

Sadly, my penlight blacklight didn't make it react.  I got this photo with my big plug-in blacklight.   The penlight lit up the uranium marbles in the container, but not the blue.  So it's still useful for me when out rummaging, but I'll need to keep looking for one which will help me find the hidden blue glow treasures on the road.

 

 

[akroorka]

It may just be a matter of wavelengths Steph. I lit up a lot of blue with mine today after I read your post.
The blue just does not react like the other colors. I use a 48” Fluorescent black-light as well when in doubt.
That little penlight sure gets hot after you use it awhile.
Marble—On!!
 

[Steph]

I once had a clear cosmetics jar which glowed the eery blue with a pleasant intensity.  

I loved it.

And I sold it.  

 

 I want another!