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

The Golconda Blue’ -- a historic diamond once owned by the Maharajas of Indore and Baroda -- is set to make its auction debut ...

Maharani of Indore; the 23.24-carat Golconda Blue in a JAR setting Christie ... The extremely precious stone comes perched in a diamond-accented ring setting by famed modern independent jeweler ...

Sarah Jessica Parker married Matthew Broderick in May 1997. Here’s everything to know about Sarah Jessica Parker’s engagement ...

The Christie’s sale will offer the stone in a ring set by the singular Parisian designer JAR. Courtesy of Christie's The Golconda Blue Diamond in its setting by JAR. Over a decade after we first ...

Marke is a New York–based brand that specializes in classic, timeless rings that are still sleek enough to keep up with the ...

In a sea of jewels, one particular stone has been stealing the show. A rare 10-carat Mediterranean blue diamond from South Africa was on display in an exhibit featuring $100 million worth of the ...