In fact, every boss wants candidates to show their truest side in front of themselves and honestly describe their experiences. They have no experience in the jewelry industry and nothing. The key is attitude.
Moreover, the interview in the jewelry store involves nothing more than jewelry-related issues. If possible, you can go to the other party first to see what they are selling, and then check the relevant information according to these, without asking too much. For example, some terms related to jewelry: what does PT stand for, common units of platinum and gold, hardness, specific gravity and refractive index of jade, etc.
Overpackaging will do the opposite.
How does the bartender conflict with jewelry? It's just a different social division of labor. Nothing, don't worry. If you really have a heart, I believe you will succeed!