Although I like coming up with different magical things, it's hard to come up with ideas that fit all the criteria I have in place.

They have to fit the ingredients used to make them, be different enough to be considered a different crystal, have some sort of quality that might be useful in crafting somehow, and have an effect that can be reversed into another unique effect. That means all crystals have two different effects, whether they are apparent or not. Got any ideas?

Oh yeah, I have a bunch of ones I haven't posted yet too. So those are coming at some point.