I hope I am doing this right. Four sources are:
Santa Fe Jewelry Supply
Otto Frei Quality Jewelry supply
I have used the first two because they are closer to me, cheaper
shipping. I have been very happy with their service. They answer all
questions, Ship same day as long as the order is placed before 4:00
pm Mountain time.
I have not used Otto Frei or Gesswein but from what I hear they are
also very reputable suppliers. You can find them and thousands more
with a Google search for Jewelry Supply
Hope this helps. BTW I also sent you a very similar message direct
to your e-mail before I figured out how to do it from here.
John Sexton ( Jack )