Alchemists Stone

[Yossar]

Hmm, it does seem to give 25 fire and cold resist. How odd. I can't ever see that being at all useful. Alchemist stone isn't something you'd leave on a character at the end of the turn, and 25 cold and fire resist is barely any incentive to do so.

[Psitticine]

I think it is just meant to be an interesting little bit of color. The stone's properties give some minor elemental protection, but not much as its powers aren't really focused in that direction. Just a touch of flavor, IOW.