Pros : This isn't the weak glow like you find in cheap plastic stars, I could READ by the light of the vial I put this in to carry it with it charging up just sitting on top of my workspace. Also, very much a bluish aqua color, not the green you get with those.
Cons : It comes in a small plastic zipper baggie, that will gladly leak if you don't put it in a more durable container.
It doesn't fuse in and of itself, very much an inclusion, and when put in the bottom of a mold (mixed with clear powder as per instructions) it did leave a rough texture.
Other Thoughts : Be careful how you use it, a little goes a LONG way. Also it's not clear itself, and behind "white" opal glass it couldn't get enough light to glow much so too thick will waste it, and on the back of a super thick piece you'll loose some utility. But I used this in light switch cover, and it worked great. Used it with some paperweights, worked great.