Collectibles platform Arena Club’s new Time Boxes could contain a Rolex or Patek Philippe watch.
This 242-Carat Rough Diamond Is Heading to Auction
Recovered in 2009, it’s the most significant stone offered for sale by Alrosa in five years.

One of the largest gem-quality crystals mined by Alrosa in the last 20 years, the diamond is the centerpiece of the company’s upcoming sale in Dubai.
Alrosa told National Jeweler that it mined the 242-carat stone back in 2009, at the Nyurbinskaya kimberlite pipe in Yakutia. It has been in the miner’s collection ever since and is the most significant stone offered for sale by Alrosa in five years.
Normally, Alrosa cuts and polishes rare finds in-house, as it did with “The Spectacle” collection of natural color diamonds.
This year, the company decided to sell the 242-carat near-colorless diamond alongside two other large chunks of rough to mark its 100th auction of large diamonds.
It added: “We feel this milestone is especially important as exactly 12 months ago our entire industry faced the toughest call in its history,” referring to the decisions that had to be made around mining and production as COVID-19 swept the globe.
The 242-carat diamond is described as near colorless with a “minor” yellowish-greenish tone.
Alrosa experts noted that because of the diamond’s proportions and the distribution of inclusions, the rough lends itself to an oval-shaped diamond that could be, William Goldberg President Saul Goldberg estimated, 70 to 80 carats in size and sell for as much as $8 million.
“It’s not often that a colorless 242-carat piece of rough comes up for auction,” Goldberg said in a statement shared via email with National Jeweler.
“Without actually holding the rough in my hands and not knowing what shape it will be, it’s hard to know the exact value. However … with the current market for large diamonds being very strong, it could be worth up to $8 million. Large diamonds are selling for high prices today. People want big, beautiful diamonds, and it gets people very excited.”
Alrosa said the opening price on the stone is $8,900 per carat, which is about $2.2 million.
In addition to the 242-carat diamond, the sale also includes a 191.74-carat diamond, a 136.21-carat stone and a range of diamonds that are 10.8 carats or larger.
The Latest

The “Constellation Plié” collar, our Piece of the Week, features diamonds arranged in a constellation of shining stars.

In honor of its 20th anniversary, the jewelry brand has released a limited-edition collection of Swiss-made timepieces.

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

“Human Being” highlights the similarities and differences between us through five sets of jewelry that celebrate fine craftsmanship.


Richemont will continue to provide operational services for the watch brand for a period while the group prepares to integrate it.

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

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

Enoch Platero, founder and designer behind Enoch Michael, is the first Native American jeweler to win the award.

AGS also announced the recipient of its “Women in Leadership” scholarship.

The founder of the billion-dollar jewelry and lifestyle brand will debut as a full-time “Shark” on the upcoming season of the show.

Plus, why retailers should be ready to adjust as the U.S. population may decline this year for the first time since the Great Depression.

René Lalique’s “Woman Dragonfly With Open Wings” pendant, the first piece the museum acquired, was one of the jewels taken.

Arien Gessner and Moss Makhoulian have been elevated into newly created roles.

A podcast prompted Smith to share his views on where origin fits into the natural diamond story and the viability of branded diamonds.

The association selected eight recipients for the funding program, which is in its second year.

Whether celebrating America’s 250th birthday or the USA’s World Cup run, July birthstone jewelry can double as a patriotic accessory.

Around 20 pieces of jewelry were stolen from the museum dedicated to French jeweler and glassmaker René Lalique.

The “Summer of ’96” campaign and collection celebrate the year the brand was founded for its 30th anniversary.

The new location is set to open this winter, featuring the retailer’s first rotating jewelry designer residency.

The pop artist appears in the latest campaign for the “Laurence Graff Signature” collection.

One-of-a-kind pearls take the shape of ice cream cones, frogs, submarines, and other imaginative charms.

Charlotte Rose said her election is “a sign that this is an industry capable of change.”

Sponsored by Rio Grande Jewelry Supply

The American jewelry house, founded by Latvian immigrants, has been creating American flag brooches since 1917.

The artwork celebrates the Atlanta jeweler’s legacy and symbolizes its commitment to supporting local artists and its community.

Its team can evaluate jewelry and watches, as well as luxury handbags, artwork, and collectibles.























