He's pretty sure he knows where that is, at least. And if he winds up in the wrong place, he can just stop and ask someone. "What are you planning on doing with them? If you can tell me that, anyway." He's not sure how rocks have power in them, but then, magic where he comes from is very different, and technology is more on the level of clockwork and steam in the cities, and levers and pulleys among his own people.