These tinted diamonds make up just 0.01 percent of all natural diamonds mined, appearing in shades of pink, blue, yellow, green, and even red. Since 2005, pink diamonds have increased in value by ...

When shopping for a diamond, whether for an engagement ring or a piece of fine jewelry, you’ll quickly encounter the term Four Cs—Cut, Color, Clarity, and Carat Weight. These four characteristics ...

A tale of two tiaras: In the high-stakes world of serious collecting, the true value of a jewel lies not just in its sparkle but in its story. Bettmann Archive/Getty Images For centuries, diamonds ...