Because of our name, a lot of people ask us for ring mountings. A google.com search for "ring mountings" gives a big list of 14Kt mountings for diamonds and similar precious stones.
What we need is a list of suppliers who have mountings for cabochons in standard calibrated sizes and "cinch mounts" for inexpensive faceted stones.
Tripps is the only supplier that comes to mind with their line of pre-notched faceted stone mountings. http://www.tripps.com BTW, Tripps has a great chart of stock size mounting at http://www.tripps.com/tichart1.pdf
If any readers have suggestions for the type of mountings craftspeople, hobbyists and rock hound and other non-goldsmith type jewelers could use, I'd love to post them here.