If 'The Golconda Blue' went to auction it would have been the largest fancy vivid blue diamond to have been presented at a ...

David DeCook, a regular visitor to Arkansas’ Crater of Diamonds State Park from Stewartville, MN, recently spotted a ...

A 10-carat blue diamond which could fetch $20 million when it goes under the hammer later this month was presented by auction ...

It used to take the Earth 3 billion years, 2,000-degree temperatures, a little carbon and a lot of pressure to grow a diamond ...

the rare gem attracts 6 million visitors a year to the Natural History Museum. Chip Clark The Blue Heart Diamond, cut from a 100-carat stone found at the Premiere Mine in South Africa in 1909 ...

The stones are 100 percent natural ... diamond of over 18 carats framed by smaller yellow and white diamonds or a matching ring with a fancy intense yellow diamond of over 12 carats. Tiffany & Co ...

A three-carat flawless diamond is not merely twice as valuable as a 1.5-carat stone ... Though chemically and optically identical to natural diamonds, they lack the scarcity that underpins ...

What was first thought to be a candy wrapper turned into a diamond find for a Minnesota man visiting an Arkansas state park ...

A 10-carat blue diamond which could fetch $20 million when it goes under the hammer later this month was presented by auction house Sotheby's in Geneva on Thursday. The cushion-shaped piece ...