So I'm working with a jeweler about an hour away on a very special project for my girlfriend (if ya get the picture). The article is being custom designed according to my specifications, and the business has exhibited a level of customer service and courtesy unrivaled by any other jewelers I have worked with.

My question is: (and I know there is no such thing as a stupid question, but I feel like I'm on the verge of it here), has anyone ever heard of giving a jeweler a tip?

My thinking is, you tip a valet for just parking a car, you tip a maitre d' for finding a table, perhaps a tip is appropriate for the gentleman crafting a ring which will represent the rest of your life?

I can already feel the "That's the weirdest question I've ever heard" crowd out there.