Diamond is famously known as the hardest mineral on Earth. “There are hundreds of claims from people who believe they have seen it,” says Oliver Tschauner, a mineralogical crystallographer at the ...

Rare Carat meets this need with lab-grown diamond pieces designed for brilliance, craftsmanship, and long-term wear.

A large pink diamond believed to have been passed down from France's Queen Marie Antoinette to her daughter is going up for auction in New York next month — and is expected to sell for millions of ...

A rare bi-colored pink diamond of “astounding weight” was found at the Karowe diamond mine in Botswana, according to the Gemological Institute of America. Lucara Diamond A rare rough, or uncut, pink ...

To misquote a famous song, "Diamonds are industry's best friend." Cubic diamond is the hardest mineral on Earth and is used in everything from precision cutting tools to high-performance ...

The Florentine Diamond, long thought lost, has finally resurfaced. Turns out, the historic gem was never missing, but locked away in a bank vault in Canada since World War II, according to a November ...

Forbes contributors publish independent expert analyses and insights. Specialist in global markets, economics and alternative investments. Insuring diamond jewelry has traditionally been simple. The ...

Forbes contributors publish independent expert analyses and insights. Specialist in global markets, economics and alternative investments. Investors are grappling with unprecedented uncertainty due to ...

Cara Tabachnick is a news editor at CBSNews.com. Cara began her career on the crime beat at Newsday. She has written for Marie Claire, The Washington Post and The Wall Street Journal. She reports on ...