From sparkling multi-million-dollar diamonds to custom designs, here are the most expensive diamond rings in the world that redefines luxury.

Find out which one of Katy Perry's engagement rings came with a bigger price tag the one from Russell Brand or Orlando Bloom.

Diamond rings have long been symbols of wealth, status, and romance. Even today people spend unthinkable amounts of money on engagement rings to ... set within a platinum and 18K rose gold band, with ...