Question on bezel settings

Dear Jennifer,
If the stone keeps falling, most likely that it doesn't fit well
within the bezel. In this case use a small amount of transparent
adhesive e.g. super-glue (in general, I try to avoid use of adhesives
to maintain the stone clarity, however in cases like you describe it
seems necessary). Then, use a manual bezel pusher tool to tighten the
bezel around the stone.
Good luck,
Sarit.

http://sarit-jewelry.com