Crystals and water
I just wanted to list some crystals that do nooot do well in water.
Crystals that will dissolve in water:
Celesite(not certain on this one, although I believe I read it did at one point.. maybe I am thinking about sunlight being a no no for this one)
Crystals that you are better off not cleansing with water(because of the long term physical affects on the crystal):
and anything raw is questionable.. Some raw crystals/stones do just fine being cleansed with water, but I think you are better off smudging with raw specimens.
I'm sure this post will be added on over time.