I don't know here. The only bit of information I have is that jewelers (I am one) tend to get pretty nutty as they continue in the business. We constantly inhale gold from buffing gold jewelry, and from sawing it up with jewelers saws.
I know one older jeweler who talks to aliens, another one who is more comfortable with his robots than he is with people and another one who is so paranoid he very rarely lets customers into his shop. (counter productive in retail, trust me) So just be careful on this one.