Wow, what a wonderful community I've found tonight. Thanks for all the tips and suggestions. I'm going to try the Sharon Schamber resizing on one of the diamonds and see if I can get anywhere near what it needs to be.
Gal288, I'd considered something akin to what you suggest, but I like your execution of it much better. I'm still not sure it will work if my diamonds aren't true-- won't they be just as "untrue" surrounded by edges?
I'll let you know how it goes. Hopefully there will be a before and after shot. Now let me go see if I have any spray starch and something to pin this to.
-- Jillaine
p.s. and here I thought the double-wedding ring was tough... (see profile photo)