Most celebs rings are the cream of the diamond crop so it's nearly impossible to say which one is more beautiful. But just for fun, we put them side by side and compared them by carat size to see which style you like best. Take, for example Gabrielle Union and Jennifer Aniston. Each actress dons a massive 8 carat rock but the main difference lies in their cuts: cushion vs. radiant. So which one will get your vote? Enter the bling ring below and let us know.