Queen Elizabeth owned a dazzling brooch cut from the world’s largest diamond. The Cullinan III and IV brooch has an estimated ...

A 170-carat pink diamond discovered in Angola may be the largest such gemstone found in 300 years, according to Australian miner Lucapa Diamond Company. Named the "Lulo Rose," the diamond was found at ...

Nothing says love like a diamond, especially a stunning blue diamond that's now up for auction. Feast your eyes on the largest flawless vivid blue diamond in the world. Weighing 13.22 carats, the ...

The bidding did not reach the unspecified reserve price. — -- After much admiration and anticipation, the world’s largest uncut diamond failed to sell at a public auction Wednesday night. The ...

CANADA (WPVI) -- A giant 552-carat yellow diamond was discovered in a mine located in Canada's Northwest Territories. Dominion Diamond Mines owns 40 percent of the mine where the diamond was found and ...

Weighing over 130 carats, the yellow Florentine is among the world’s most valuable diamonds—but for the last 100 years, its ...