One of the world's rarest diamonds is about to be sold to the highest bidder. The five-and-a-half carat fancy vivid blue-green stone is hitting the auction block.

Add Yahoo as a preferred source to see more of our stories on Google. ROCK OF AGES: April has always been an important month for diamonds, and the Natural Diamond Council is doubling down on tradition ...

The Azure Blue is one of two important blue diamonds being offered at Christie’s. The second is a 5.04-carat fancy vivid blue ...

“Natural pink diamonds are formed deep within the earth’s crust, where extreme heat and pressure alter their molecular structure,” said Heritage’s Director of Fine Jewelry, Gina D’Onofrio. “This rare ...

GENEVA, Switzerland -- If diamonds are a girl's best friend, this one is her BEST friend forever. This stunning 8.01-carat beauty is going up for auction at Sotheby's later this month, and it could ...

Nita, who is married to Mukesh Ambani, wore an astounding gemstone that has direct connection to the Nizami lineage ...

When it comes to the world of high jewelry—or haute joaillerie as it’s known—the most rarefied strata of jewelry rise to the top. Similar qualifiers describe fancy green diamonds: incredibly rare, ...