Alcuin will be carrying around a small fragment of this in his pocket once he figures this out, in the hopes that those he speaks with are a little more truthful without necessarily recognizing the gold's influence. He will also have some Bismuth with him to boost his own creative maneuvering around questions he'd rather not answer truthfully - feel free to make use of that as well.

As a note: You are more than welcome to come across him before he acquires this! Just let me know when you tag in!