What about the Master Alchemist pretender? How does it stack alchemy bonuses?
A Master Alchemist gets a +100% bonus to Alchemy, so does the Alchemist's Stone add to that, to a total of 150% If so, what is the net gain from fire gems or whatever?
Due to the increase in gold produced by provinces in Dom3 alchemy is simply not used anymore.
The base ratios for alchemy should probably be bumped by x2 to get them back into line with Dom2 and then maybe people would consider using the option, then and only then would the stone become somewhat worthwhile.
However even in Dom2 there wasn't a lot of use of alchemy. With the advent of the CBM there is even less use for alchemy. Pity, I think it was a cool cool system.