Sourcing

This 242-Carat Rough Diamond Is Heading to Auction

SourcingMar 02, 2021

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.

20210302_Alrosa_242_carats_header.jpg
Alrosa mined this 242-carat diamond at the Nyurbinskaya kimberlite pipe in Yakutia 12 years ago. It is going up for auction this month in Dubai. (Photo courtesy of Alrosa)
Moscow—Alrosa is marking its 100th auction of large diamonds with a rare gem indeed—a 242.31-carat chunk of rough that’s expected to sell for millions.

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 opening price on the 242.31-carat diamond is $2 million, or about $8,900 per carat. The shape of the rough and the location of the inclusions mean it could be polished into an oval-shaped diamond of 70 to 80 carats. (Photo courtesy of Alrosa)
The opening price on the 242.31-carat diamond is $2 million, or about $8,900 per carat. The shape of the rough and the location of the inclusions mean it could be polished into an oval-shaped diamond of 70 to 80 carats. (Photo courtesy of Alrosa)


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. 
The Jubilee Auction #100 is scheduled to take place March 22. Viewings will  take place March 14 to 21 at the Alrosa sales office in Dubai. 

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.
Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

Stock image of gold bars
CrimeApr 16, 2026
FBI Issues Warning to Refineries, Retailers Due to High Price of Gold

The alert states that burglary crews are targeting jewelry businesses and details how jewelers and refineries can protect themselves.

Screenshots of Episode 4 of the “My Next Question” podcast
PodcastsApr 15, 2026
Episode 4: The Natural Diamond Dilemma

Sally Morrison and Mark Klein discuss De Beers’ first beacon in 16 years and the mistake the industry made with lab-grown diamonds.

Randy McKenzie of Spark Creations
MajorsApr 15, 2026
Spark Creations’ Randy McKenzie Dies at 72

McKenzie spent 45 years with Spark Creations and is remembered for being kind, dedicated, and hardworking.

Antique Jewelry & Watch Show
Brought to you by
Discover Timeless Treasures: A Showcase of Antique Jewelry & Timepieces in Las Vegas

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

Rolex Cosmograph Daytona Watch
WatchesApr 15, 2026
These Are the New Rolex Watches for 2026

Rolex focused exclusively on the Oyster Perpetual this year, as the model is celebrating its 100th anniversary.

Weekly QuizApr 09, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Pomellato Nudo blue topaz necklaces
FinancialsApr 15, 2026
Kering’s Jewelry Shines in Q1, Gucci’s Struggle Continues

The luxury giant discussed the Middle East conflict and its transformation plans, hinting at a stronger jewelry presence in North America.

Diamond Divas
TechnologyApr 15, 2026
This Jewelry Brand’s Video Series Is Up for a Webby Award

“Diamond Divas,” a social media reality series by Shahla Karimi Jewelry, is nominated in the “Best Social: Fashion & Beauty” category.

lvajws image 1.jpg
Brought to you by
Las Vegas Antique Jewelry & Watch Show: Showcasing the Most Collectible Merchandise from Across the Globe

Gain access to the most exclusive and coveted antique pieces from trusted dealers during Las Vegas Jewelry Week.

Model wearing Bulgari Vimini necklace and earrings
FinancialsApr 14, 2026
LVMH’s Q1 Sales Sink 6% Amid Middle East Conflict

Plus, how Saks Global’s bankruptcy affected the luxury giant’s first quarter.

International Jade Summit
SourcingApr 14, 2026
International Jade Summit to Return to Monterey

Presented by Mason-Kay Jade, the summit, in its second year, will again be held during the Monterey Bay Jade Festival.

Continental Buying Group
Events & AwardsApr 14, 2026
CBG Releases Details for Las Vegas Show

The group has announced its lineup of speakers and a new “Rising Stars” pavilion.

Uniform Object Carbon Form Collection Campaign Imagery
CollectionsApr 13, 2026
Uniform Object’s New Jewelry Collection Centers on the ‘Carbon Form’

The “Carbon Form” collection explores the contrast between high and low materials, using rubber cord alongside 18-karat gold and gemstones.

Jewelers of America
Events & AwardsApr 13, 2026
JA Accepting 2026 Impact Initiative Applications

The program provides essential funding to organizations for projects that enhance the jewelry industry.

Coconut Grove Miami
Events & AwardsApr 13, 2026
Couture Announces New Show in Miami

The jewelry trade show is launching its first open-to-the-public event in Coconut Grove this November.

Police car with lights on
CrimeApr 13, 2026
JSA Offers Reward in Oregon Jewelry Store Armed Robbery

JSA is seeking information about the gunpoint robbery of a Kay Jewelers location in Oregon’s Washington Square Mall.

Watches on a table next to a coffee cup
WatchesApr 10, 2026
These Watches Have Increased in Value the Most Since 2018, Says Chrono24

The top-performing watch models may be surprising, with Rolex and several popular pandemic-era picks notably absent from the top 20.

Ophelia Eve Scroll Toggle Pendant
CollectionsApr 10, 2026
Ophelia Eve’s Toggle Pendant Holds Your Secrets

The “Scroll” toggle pendant, our Piece of the Week, opens to reveal a hidden message, mantra, or love letter written on washi paper.

National Jeweler columnist Sherry Smith, partner at The Retail Smiths
ColumnistsApr 09, 2026
Jewelry Demand Isn’t Stronger, Prices Are Just Higher

Jewelers who misinterpret the state of the jewelry market risk employing the wrong retail strategy, cautions columnist Sherry Smith.

Tiffany & Co. Nathalie Verdeille
MajorsApr 09, 2026
Tiffany & Co. Promotes Nathalie Verdeille to SVP, Chief Artistic Officer

In her newly expanded role, she will continue to oversee the jewelry category, as well as watches, home, and accessories.

Jacob & Co. The Godfather II Musical Watch
WatchesApr 09, 2026
Jacob & Co. Rolls Out Its Sequel to ‘The Godfather’ Musical Watch

“The Godfather II” watch plays two melodies from the mob film’s score, “The Godfather’s Waltz” and “The Godfather Love Theme.”

Jesse Itzler
Events & AwardsApr 09, 2026
JCK Announces Jesse Itzler as 2026 Keynote Speaker

Organizers have also introduced the new JCK Talks Signature Series, as well as an offering of watch-focused workshops and lectures.

Alan Hodgkinson
SourcingApr 09, 2026
AGA To Honor ‘Quiet Leadership’ With New Award

The Alan Hodgkinson Medal recognizes gemologists who are consistently generous with their time and expertise.

Oris CEO Rolf Studer and Oris CFO Claudine Gertiser
WatchesApr 09, 2026
Oris Names New CEO, CFO

The Swiss watchmaker is changing up its executive leadership team as part of a restructuring.

Hearts On Fire What’s Your Signature Campaign Imagery
CollectionsApr 08, 2026
Hearts On Fire Celebrates 30 Years By Asking a Question

The “What’s Your Signature?” campaign invites women to think about how they see themselves.

41.82-carat Type IIb blue diamond recovered from Cullinan in January 2026
SourcingApr 08, 2026
Sale of 42-Carat Blue Diamond Gives Petra a Boost in Q3

The big diamond’s sale added to the company’s revenue though the market remains “challenging” overall, particularly for smaller goods.

American Gem Society Confluence Logo
Events & AwardsApr 08, 2026
AGS Confluence Returns with AI, Sustainability Sessions

Rob Bates of The Jewelry Wire will also moderate a panel on the state of the jewelry industry during the virtual event.

Dennis Buzz Busby and Randy Welch
Events & AwardsApr 08, 2026
TJS to Honor 2 Longtime Former Stuller Employees

The Jewelry Symposium will honor two industry veterans with lifetime achievement awards at its upcoming May event.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy