Natural diamonds have lost more than half of their value over the past five years. Several drivers are conspiring against diamonds, including a glut of mined stones that hit the market over the past ...

In this piece, we will take a look at the ten biggest diamond companies in the world. For more companies, head on over to 5 Biggest Diamond Companies in the World. Diamonds are among the most precious ...

We caught up with Dr. Jeffrey Post to hear the story of this infamous blue diamond, see what makes the National Gem and Mineral Collection so special and learn about the countless things minerology ...

Determining the authenticity of a diamond requires professional equipment and a highly trained eye. At-home tests do exist—from the fog test to the water-drop test—but the only way to be sure is by ...

A typical .17-carat diamond from the park can sell for around $700, said certified gem appraiser Laura Stanley in Little Rock. But a high-quality six-carat yellow diamond from the park can sell for ...

The phrase says diamonds are forever. Hypersonic ballistics say otherwise. In a recent experiment, ...

Forbes contributors publish independent expert analyses and insights. Pam Danziger reports on retail, focused on the luxury consumer market. This article is more than 3 years old. "Diamond Foundry is ...