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

The Hope Diamond and Pink Star Diamond are among the most expensive. The Pink Star sold for over $71 million, making it one ...

From Jennifer Lopez's pink engagement ring to Kim Kardashian's 15-carat stunner, read on for a roundup of some of the most ...

A rare diamond exhibit in Abu Dhabi, United Arab Emirates, featured a special blue diamond, with the exhibit's worth totaling $100 million amid the display of 700 total carats of diamonds.

Auction house Sotheby's unveiled a set of rare diamonds valued at $100 million in an exhibition center in Abu Dhabi on ...

A rare blue diamond was displayed at an exhibition of $100 million worth of the world’s rarest diamonds in the United Arab ...