The Perpetual Motion collection by Brazilian jewelry designer Yael Sonia is certainly notable. The “Spinning Wheel” bracelet and a variety of similar pieces retail at painful prices (think 28.000 dollar…) but aren’t they pretty? I wouldn’t advice wearing one of these on your writing arm during a meeting or an exam though. (you may think the sound of rolling gems on gold to be relaxing, I’m quite certain your colleagues won’t think so…)
Yael Sonia’s site is currently under construction, but in the future it will be back online here: http://www.yaelsonia.com.br/ (where you at the moment cans ee a nice animation of the Spinning Wheel in action), and here: http://boutique-yaelsonia.com.