These dice caught my eye because, well, they glow in the dark. Silly, pointless, but novel enough to be worth it, anyway! They're very pretty dice in the light and worth it just for that! Now, they are standard UV glow in the dark, meaning they have to be exposed to some form of UV light, be it sunlight or (what I used) a handheld UV light. Once they are exposed to a decent amount of UV, though, they will glow quite brightly. I don't have a black light on hand, but I'd wager they'll react to tha...