Men spend an average of $5,000 on engagement rings, then drop another however many hundreds or thousands of dollars on wedding bands. Call me unromantic, but that is a huge waste of money (I’d rather spend 10 days in Antigua)—especially when you can buy what’s effectively two rings in one.
Japan-based Torafu Architects coated a ring in a thin layer of silver that rubs off over time to reveal a gold wedding band beneath. "The time shared between two people can thus be felt with the wearing of this ring," they say. That’s one way to look at it. Another: It’s a great way for cheap-asses to avoiding having to buy an engagement ring and a wedding band.
There is a third, distinctly unsentimental function, as a commenter on Designboom points out: infidelity sniffer-outer. If the inside of your partner’s ring wears away too quickly—quicker than the exterior—that means he takes it off way more than he should. Yikes.
[Images courtesy of Torafu Architects]