She wore the “Le Cauri Endiamanté” earrings, our Piece of the Week, in the Obamas’ first dual portrait for the Obama Presidential Center.
30-carat yellow diamond sells for $500K
A 30-carat yellow diamond expected to garner up to $2 million sold for only $500,000 at a Canadian auction house on Sunday, possibly due to the fact that it lacked a grading report.

Toronto--A 30-carat yellow diamond expected to garner up to $2 million sold for only $500,000 at a Canadian auction house on Sunday, possibly due to the fact that it lacked a grading report.
“It’s an uncertified stone, it was never sent to the GIA, and only a diamond dealer would be able to evaluate it. That kind of takes the public out of the bidding,” said Kashif Khan, managing director at Ritchie’s, the Toronto-based auction house where the diamond was sold.
Khan said while most colored diamonds are certified by either the Gemological Institute of America or American Gemological Laboratories, the 30-carat yellow stone came from an old collection and had no paperwork to go along with it so the valuation was based on “what your eyes see.”
“The seller had it for many years and they were confident in what it was and what they paid for it,” he said. “(Ritchie’s) isn’t a retailer, so we don’t get lots retail-ready, we sell them as is. So the way it comes is the way it goes, and it’s up to the buyers and their confidence in the diamond.”
Colored diamonds half the size of the 30-carat yellow have fetched impressive prices at auction this year, including “The Winston Blue,” a 13.22-carat fancy vivid blue diamond that sold for $23.8 million at Christie’s in May.
RELATED CONTENT: Aided by big blue, Christie’s sale sets new record
An oval-cut, VVS1 5.05-carat fancy vivid pink diamond sold for $9.6 million also at Christie’s earlier this month, and a 100.09-carat fancy vivid yellow diamond garnered $16.3 million at Sotheby’s in May.
The Latest

Couture’s Michelle Orman joins Amanda Gizzi and Michelle Graff for this special post-Market Week episode of My Next Question.

The lab is seeing emeralds with filler added post-testing enter the market, accompanied by reports that indicate little to no treatment.

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

The third generation of the Stern family to head Patek Philippe, he navigated the “quartz crisis” and preserved the brand’s independence.


The Texas-based jeweler is gradually rolling out a new experience-forward layout in its stores.

The Super Bowl LX champions were honored with diamond and blue sapphire rings by Jason of Beverly Hills.

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

Marianna Smirnova previously spent a decade working with the Responsible Minerals Initiative, in addition to other relevant roles.

The New York Knicks took home the Larry O'Brien Trophy crafted by Tiffany & Co.

Associate Editor Natalie Francisco lists the trends she spotted during Jewelry Market Week that will dominate the second half of 2026.

Its app now reflects increased prices for Mozambique ruby, as well as changes to its Burma ruby charts.

The manufacturer has tapped Alicia Arnold, the former director of custom design at Tiny Jewel Box.

The revamped, elevated space will feature a two-story Patek Philippe atelier and a rooftop patio for parties.

The special-edition piece marks the 140th anniversary of the iconic beverage brand.

Here are 13 small charms to inspire your layered looks this summer.

Our Pride Month Piece of the Week, the “Margaux” ring, is part of the wife-and-wife team’s new “Lovestoned” collection.

The group has named the keynote speaker and announced a new pavilion for its next event, which is slated for September.

From lions and hippos to snails and fish, Senior Editor Lenore Fedow wrangles her picks for cutest jewelry critters in Las Vegas.

The big stone will be fashioned into a 20.26-carat diamond in celebration of the retailer’s 100th anniversary this year.

Marie-Laure Cérède will join Chanel as the new director of its jewelry creation studio, starting in October.

At the JCK show, the lab-grown diamond brand teamed up with Jewelers for Children to support Make-A-Wish India.

Ilana McCabe is Signet’s vice president of public relations and brand communications.

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.

The approval means the retailer is on track to exit bankruptcy proceedings this summer.

The men are believed to be part of the group of several masked suspects that robbed Marc Robinson Jewelers in April.

The bridal-focused brand is also launching its Custom Atelier this summer, a digital custom design tool for its authorized retailers.






















