The 41.28ct blue diamond unearthed at the famous Cullinan Mine, could be one of the most significant gemstones ever to be mined.

De Beers reportedly cut rough diamond prices in January, a rare retreat by the industry’s once-dominant broker as slumping ...

Diamonds, once the ultimate symbol of opulence and wealth, may be on their way out. With the prevalence of lab-grown alternatives and an overall decrease in demand, natural diamond companies are being ...

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 ...

Physicists have taken a gemstone better known for engagement rings and turned it into a laboratory for one of the strangest ideas in modern physics, a phase of matter that repeats in time instead of ...