I read a novel, maybe even a series, that would have been written around the 90s, (or a little after that). It had a wise a$$ protagonist, who was kind of an epic fantasy version of Sledgehammer detective. Fair bit of humor in them. In one book, there was a jewel that everyone wanted. It caused much discord, though, if you actually acquired it, In the end, he buries it to save everyone. The place where he buries it is called Jerusalem. Then he goes off smugly convinced that it’ll never cause discord again. Would love to find it again.