The only problem with that is, if it is a Vintage piece, you may not
be using the stones that were original to the piece. There are quite
a few different cuts. Matthew Ribarch MRstones4U@aol.com is who I
buy my replacement stones from, because he generally has the various
cuts of stones.
If you aren't interested in preserving the authenticity of the
piece, (Vintage Dealers and Collectors are very insistent about
this), then buying another piece for replacement stones is a good
way to do this.