Dome Ring: $165

I have to hand it to The New York Times' Urban Eye for finding this one - the Dome Ring by Kenneth Jay Lane for just $165. "Faceted Swarovski crystals line domed curve of faux hematite paved ring. Inner tab adjusts to fit. Choose from green or crystal. Measures 1" wide."

I think this would make for an excellent fancy pants ring. Or even if your pants aren't that fancy, this ring will crank up your cool and/or groovy factor exponentially.