What to buy a jeweler

Hey folks. My friend is a jeweler and I’m trying to find a good Xmas gift for her. Are there any books or rare finds to buy someone in the jndustry?
Awww, so cute! I think it is really hard to find a gift for a person from this industry... Most of all, buying jewelry for a beloved one is a normal thing but when this person does jewelry by herself it is already not the same impact on the person. Anyway, I am sure that exist a lot of amazing things that you can give her. If you have in your plans to shock her this Christman, you can give her on Christmas night the promise ring on. I think it will make her Christmas night magical like a fairytale and she will be very happy.