What about a second-hand ring from a happy stranger?
Or a second-hand ring from someone who's unhappy but you know quite well?
( Theoban What of it, Fri 10 Jul 2009, 10:29, archived)

Neither of these are appropriate
due to either unhappiness or distance of relationship with previous ring-owner.

It seems unlikely that a ring with such a history would adequately symbolise the new marriage.
( in vino veritas, Fri 10 Jul 2009, 10:34, archived)