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

In the age of private sales and auction-house theatrics, the old metrics of diamond value—cut, clarity, carat and color—are only the opening act. True connoisseurs are chasing rarity, provenance ...

For some, it's an emotional issue; for others, it's a legal case, one taught as early as the first year of law school.

Over the years, a diamond transformed from being a symbol of romantic love to that of empowerment, thanks to the power of ...

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

Neil Lane, who's been making engagement rings for the 'Bachelor' franchise for years, tells PEOPLE what went into making Grant Ellis' sparkler for his winning Bachelorette — and how it was different ...