"What we've seen more recently is the supply catching up with the demand," Stewart told CNBC. "Something's definitely shifted ...

The top lot of the Sotheby’s auction was a 4.50-carat internally flawless oval mixed-cut fancy vivid blue diamond that ...

The fall auction sales in New York next week are expected to top $1.4 billion, marking a 50% increase from last year, ...

A diamond brooch that French emperor Napoleon was said to have lost while fleeing from the Battle of Waterloo in the early ...

Sotheby's did not disclose the identity of the seller of the brooch, and said that the buyer was a "private collector." ...

Napoleon’s brooch led the auction of 65 royal and noble jewels, which achieved a “white glove” result—every lot sold—for a ...

Everything old is new again! Herzog and de Meuron's renovation delivers fresh glamor, but auction staffers will have to play ...

A dazzling 13-carat diamond brooch once owned by Napoleon I could fetch up to $600,000 during Sotheby’s Royal and Noble ...

Gustav Klimt's 'Porträt der Elisabeth Lederer,' part of Leonard A. Lauder's personal collection, could fetch $150 million at ...

For her first-ever auction capsule, goldsmith Kindred Lubeck presents three hand-engraved, one-of-a-kind gemstone rings for ...

Frida Kahlo’s painting “El sueño (La cama)” is expected to fetch between $40 million and $60 million at auction, potentially ...

With roughly a month to go, and major sales slated for next week, Artnet takes a look back at the major auction moments so ...