Polish the inside of the bezel, de-grease, and then paint a coat
of a clear lacquer on the inside of the bezel before setting the
never in a million years!!!
Over time the lacquer will discolour and may delaminate from the
Also if set in a ring what happens to the lacquer when a ring size is
needed? The heat will damage the lacquer.
One solution is do not set these stones in solid back bezels.
Another solution is to gold plate the inside of the bezel as is done
with reclaimed tortoise shell.