LONDON - A diamond ring that’s the ultimate in bling is set to go under the hammer, with an estimated price of $15 million to $25 million. Sotheby’s auction house says the Cartier ring holds an 8.01 ...

The fancy color diamond market is on the upswing, according to a report, with blue diamonds seeing the largest gains. Blue diamonds saw a 5.9% increase in value in the fourth quarter of 2017 in a year ...

A 5.72-carat fancy intense blue diamond sold for more than $8.8 million, making it the top lot of a varied and successful Christie’s Magnificent Jewels auction held Tuesday in New York. It was the ...

When the De Beers Cullinan Blue, a 15.10-carat step-cut fancy vivid blue diamond, goes on the block at Sotheby’s Hong Kong at the end of April, it will carry an estimated price tag of $48 million, the ...

new video loaded: Blue Diamond Sells for Bargain Price of $25.6 Million transcript The rare Mellon Blue 9.51-carat teardrop-shaped blue diamond sold for $25.6 million at an auction on Tuesday – $7 ...

Sotheby’s and Christie’s will auction a strong collection of rare and important gemstones in New York just in time for the holidays, with both featuring a blue diamond ring as the top lot. On Dec. 4, ...