I have nearly all of them in All the Mods 7. Even infused them with 100 levels of Experience to make them unbreakable. Shows nothing at all. So far, only ones I have managed to get to work are Copper, Lapis, Vibranium, and Aluminum. All others fail to do anything all, whether I use the Charm or drink the potion. it shows nothing.

You're gonna need to take that up with the potion, this isnt a bug with the charms

Well the Charms are your domain, so if they are not working, then its a combination error between both your codes, not his or yours individually.