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

Priceless gems and the stories behind the beautiful - and often famous - women who wore them are part of a Cartier display ...

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

When it comes to diamonds, carat weight plays a significant role in their overall value. A high quality 4 carat diamond ring ...