A successful jeweler has to master the application and at least grasp
part of the theory of a lot of different things: metallurgy,
chemistry, physics, even engineering.
He or she also has to be accomplished in both the theory and practice
of multi-dimensional design, including colors, textures, lines, and
shapes. Often he or she is also well-versed in design history.
The personal qualities involved have to include patience and
discipline, a willingness to learn and improve continually. And be
confident enough with a blowtorch and some pretty serious chemicals
not to come out of the shop each day a little more singed!
Somebody who is self-employed as you are also has to be a successful
book-keeper and marketer, as well as a manager.
Who would your fiancee rather be with: somebody who has all those
qualities and is doing what he loves, or somebody who has those
qualities and is doing some “prestige” occupation for the sake of
what other people think?
Or on another trail of thought:
Famous Artists who were jewelers or jewelry designers: Salvador Dali,
Erte (fashion design, which at the very least can count as decorative
art), Holbein, Cellini.