To be honest, they're not really wedding rings. But! The interlocking rings are ridiculously small. These two circular rings of DNA, measuring only 18 nanometers in size, were made by a guy who got married while working on this experiment (thus the name).
Despite a lifelong fascination with the pinkie ring and a brief flirtation with a Livestrong bracelet, I've never actually worn jewelry. I might have to revise that stance, though, for this ring forged by Samurai swordmaking technique.