This is not what you want to hear, but I would tell them to take
it back to where they bought it. If you repair it, you will OWN it
forever. I do not even clean jewelry that has invisible set
stones. Unless of course it is a Van Cleef and Arpels piece.
Bill is dead right.
I’ve only had a couple of invisible set repairs cross my bench in
years. I refused all even with a rich store which tended to cover
’accidents’ A bunch of other jewellers in the shop also declined.
Better to get fired for caution than for being dumb.
Just run away fast, russian roulette with a fully loaded revolver
has better odds.
Analog/Digital Modelling & Goldsmithing