Honestly, if you're even considering this kind of thing... you've got issues.
Japanese design firm Torafu Architects has invented a wedding ring that, like all good relationships, gets better with age! The ring is gold with a silver-plated exterior. As the months and years go by the silver wears off to expose the golden center.
Kind of reminds me of a jawbreaker candy. Except, in this case, by the time you get to the center you're not wondering why you bought it in the first place. Hopefully.
An engagement ring lost four years ago at Rigby Lake in Idaho was recovered by a kayaker and returned to its owner. Necia Rasmussen misplaced her princess-cut diamond ring while visiting the lake in 2008, when she removed it to apply sunscreen to her children. Interestingly enough, her mother-in-law also had a similar experience in which she lost her engagement ring only to find it thirty years later in the family garden. Luck runs in the family!