What should I do with my engagement/wedding rings?

[ifIwerenotanandroid]

I had my rings cut off when they were cutting into my finger, but I haven't been able to decide what to do with them. Any ideas?

Should I get the rings resized, or have them made into another piece of jewellery? The wedding band is plain & narrow & 18ct gold; the antique engagement ring has five small diamonds set in platinum on an 18ct gold band.

My favourite idea so far is a pendant of fine gold lines of varying lengths, each with a diamond on at a different level.