Petra Finds 39-Carat Rough Blue Diamond at Cullinan
The Type IIb stone is of “exceptional quality” in terms of both color and clarity, the miner said.

The diamond miner announced Thursday its recovery of a 39.34-carat Type IIb rough blue diamond of “exceptional quality” in terms of both color and clarity from the Cullinan mine in South Africa.
The company said it expects to sell the diamond via a special tender.
The Cullinan mine was originally called Premier but was renamed in homage to the famous 3,106-carat rough diamond of the same name that came from there.
A former De Beers property that has been operating since the early 1900s, Cullinan is known for producing large stones and blue diamonds.
In fact, another big diamond came from the mine earlier this year—Petra said it recently sold a 299.3-carat diamond recovered at Cullinan in January to Stargems DMCC for $12.18 million.
In addition to Cullinan, Petra Diamonds also owns Finsch and Koffiefontein in South Africa and Williamson, a currently mothballed open-pit mine in Tanzania.
The miner just completed its debt-for-equity restructuring, which it started after being unable to find a buyer after putting itself up for sale.
That involved its $650 million bond debt being replaced by $337 million in new notes—$30 million from existing debtholders and the rest converted into equity.
The Latest

The jewelry manufacturer and supplier is going with a fiery shade it says symbolizes power and transformation.

The singer-songwriter will make her debut as the French luxury brand’s new ambassador in a campaign for its “Coco Crush” jewelry line.

Founded by jeweler and sculptor Ana Khouri, the brand is “expanding the boundaries of what high jewelry can be.”

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

The nonprofit’s new president and CEO, Annie Doresca, also began her role this month.


As the shopping mall model evolves and online retail grows, Smith shares his predictions for the future of physical stores.

The trade show is slated for Jan. 31-Feb. 2 at The Lighthouse in New York City's Chelsea neighborhood.

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

January’s birthstone comes in a rainbow of colors, from the traditional red to orange, purple, and green.

Footage of a fight breaking out in the NYC Diamond District was viewed millions of times on Instagram and Facebook.

The supplier has a curated list of must-have tools for jewelers doing in-house custom work this year.

The Signet Jewelers-owned store, which turned 100 last year, calls its new concept stores “The Edit.”

Linda Coutu is rejoining the precious metals provider as its director of sales.

Sparkle with festive diamond jewelry as we celebrate the beginning of 2026.

The master jeweler, Olympian, former senator, and Korean War veteran founded the brand Nighthorse Jewelry.

In its annual report, Pinterest noted an increase in searches for brooches, heirloom jewelry, and ‘80s luxury.

Executive Chairman Richard Baker will take over the role as rumors swirl that a bankruptcy filing is imminent for the troubled retailer.

Mohr had just retired in June after more than two decades as Couture’s retailer liaison.

Shekhar Shah of Real Gems Inc. will serve as president of the Indian Diamond & Colorstone Association in 2026.

This year’s good luck charm features the mythical horse Pegasus, and is our first Piece of the Week of the new year.

Articles about crime, engagement rings, and a necklace worn in the World Series generated the most interest among readers.

As part of the leadership transition, Sherry Smith will take on the role of vice president of coaching strategy and development.

It marks the third time the country has headed the Kimberley Process. Ghana will serve as vice chair.

The new Bulova x Stetson designs highlight two animals often associated with the American West—the bison and the Texas Longhorn.

Its residency at Yamron Jewelers will run through May 2026.

From influential executives to innovative designers, we pay tribute to the people we said goodbye to this year.

The retailer is expanding into areas with large Indian and South Asian populations.























