If you've been doing Mistmoore missions, then yes, you talk to Vual Stoutest. Each camp has a different person to talk to. You get new information every 2 adventures but I think you only get stats on your Adventurer's Stone (AS) every 10 adventures at each individual camp. It doesn't matter if you have your AS augmented the entire time or not, it just reads the flag of your completed adventures. So, for example, if you get a new charm and have to destroy the old AS, when you get a new one (by talking to Vual Stoutest again, for example) it will have the same stats.
Game on,
The Oneiromancer