Rio Grande (http://www.riogrande.com) has ready made jewelry finding
that you might be able to set your stones depending on the style.
Tripp’s is another company that offers mountings that are easy to
set - I couldn’t find their website but here is a site talking about
how easy it is to use their settings: tripps.com
Maybe that is their website. Anyone may purchase from these
companies. Here is another list of vendors where you can get various
jewelry making supplies:
Check them out but be aware; some of them you do need to be a
wholesaler. Good luck!