Found: Yin-Yang Ring

Sterling silver setting surrounds the circle, divided by an elongated S. The white of the yang holds one dot of black yin, but the opposite side where yin is supposed to dominate is empty--the black has cracked over the years and mostly fallen out, though oddly enough it works, as there is enough black left to completely surround the bottom of the ring, sometimes hidden by shadow in certain lights, sometimes shining almost yang in its brightness. Somehow the balance survives.

I bought this ring for myself in college and wore it everyday for years. When it cracked, I put it away and forgot about it. And just when I was itching to buy a new ring, this one comes back into my life. I'm wearing it now to regain balance.