Came across this article from Vogue Paris on exquisite bands that can be worn in several ways by stacking them. They are all spectacular, but I would have to say Cartier's Entrelacés (2nd row), Dior's Bois de Rose (3rd row), and Chaumet's Bee My Love (6th row) make my heart skip a beat. Of course, they aren't exactly wallet-friendly, but it's something you should consider investing in for that extra sparkle.
{Image credit: Vogue Paris June 2011}