Actually, that photo is just with a flash on the black background.
But yes, i just tried it with the black light and they do glow!
Javier
.... ok, just tried to take a photo under black light, but it keeps looking purple like the light in the photo.
Can this be because of the iridescence/overlay of the vases? because I can see it with my eyes they turn glow-green, but I cant capture it on the photo. Maybe the light is not strong enough... not sure...
.... looking at it closely, the vases are reflecting the purple light and thats what im getting in the photo.
But they do have a glow.