1000x better than a fidget spinner, this two-tone band is made of palladium and 18k gold. It is constructed of two band/tracks that allow the middle pieces to move back and forth, making it one of the most fun rings I've had, hands down. One of the pieces is set with a flush set diamond, for a little extra sparkle. 

Palladium and 18k Diamond Puzzle Ring - 6g - Size 9 (not sizable) - 5.35mm