The top lot of the auction house’s Hong Kong jewelry sale was an Art Deco Mauboussin necklace with ruby beads, which sold for $2 million.

Lauren McLemore

Two metal detectorists discovered the ring, which may have belonged to English noblewoman Matilda of Lancaster, in Suffolk.

Lauren McLemore

The 22.09-carat fancy yellow “Pragnell Kimberley Sunshine Diamond” is part of the fall jewelry sale at Heritage Auctions.

Michelle Graff

The “Kat Florence Luminas” will be offered together as one lot and could fetch up to $637,000.

Lauren McLemore

Ken Citron joins the celebrity memorabilia-focused auction house ahead of its first week-long series of events in Abu Dhabi.

Michelle Graff

The auction, held in Bangkok, was 96 percent sold by lot, with nearly 411,000 carats of Mozambiquan rubies sold.

Lauren McLemore

Cat ladies of the jewelry world, unite. Sandy Lerner’s “significant” collection of cat jewelry and other objects is going up for auction.

Michelle Graff

The stainless steel Patek Philippe “Calatrava” watch from the 1930s sold for nearly $80,000 at a recent Hansons Cornwall auction.

Lenore Fedow

The Verdura brooch, which belonged to the late Virginia Fortune Ryan Ogilvy, was sold to a private collector in Asia.

Lenore Fedow

The 22-karat gold egg, sold at Batemans Auctioneers in the U.K., was part of a 1980s treasure hunt ad campaign for Cadbury Creme Eggs.

Lenore Fedow

The brooch was owned by Virginia Fortune Ryan Ogilvy, who served as a lady of the bedchamber to Queen Elizabeth II for nearly 50 years.

Lenore Fedow

Nate Borgelt will lead the digital auction house and content platform’s new division as head of watches.

Natalie Francisco

A ring set with “hogback” diamonds, an early stone cut dating to around the 16th century, sold for more than $20,000 at a U.K. auction.

Lauren McLemore

The recent high jewelry auction, which also featured the sale of a 10-carat blue diamond, was “a celebration of color.”

Lauren McLemore

Found by a metal detectorist, the ring likely belonged to a wealthy, possibly royal, owner, said Noonans.

Lenore Fedow

It was a banner day for blue gemstones, with another blue diamond topping $8 million and a 41-carat sapphire going for $2.3 million.

Lauren McLemore

Up for auction at Sotheby’s, the collection of Tempelsman’s personal effects includes a Cartier Tank watch Jackie O. gifted him.

Lauren McLemore

A private collection of five Paraíba tourmalines also will be up for sale at Sotheby’s High Jewelry auction in New York, scheduled for June 16.

Lauren McLemore

Everett covers colored stones’ surging popularity, the mellow return of the “Mellon Blue,” and his “The Devil Wears Prada” doppelgänger.

The Western star’s 14-karat gold signet ring sold for six times its low estimate following a bidding war at U.K. auction house Elmwood’s.

Natalie Francisco

A matching pair of 18.38-carat, D-color diamonds from Botswana’s Jwaneng mine sold for $3.3 million, the top lot of the jewelry auction.

Michelle Graff

It was the second auction appearance for the fancy vivid blue-green diamond, which sold for $7.8 million at Christie’s Geneva 12 years ago.

Lauren McLemore

Led by the 6.59-carat sapphire, the sale garnered $9.7 million, a record total for a Heritage jewelry auction.

Lauren McLemore

Of the many examples used in the filming of “Le Mans,” this one is believed to have spent the most time on Steve McQueen’s wrist.

Lauren McLemore

Believed to be one of three made in 1987, the Cartier London Crash was hot at the “Shapes of Cartier” sale at Sotheby’s Hong Kong.

Natalie Francisco