Auctions

‘The Enigma,’ a 555-Carat Black Diamond, Could Sell for $6M at Auction

AuctionsJan 18, 2022

‘The Enigma,’ a 555-Carat Black Diamond, Could Sell for $6M at Auction

The massive natural fancy black diamond will be offered without reserve at Sotheby’s next month.

20220118_Enigma-diamond-Sothebys.jpg
The 555.55-carat “Enigma” diamond will be the largest cut diamond to appear at auction when it hits the block at Sotheby’s next month. The diamond will be sold without reserve.
Dubai—A mammoth black diamond soon will make its auction debut. 

In February, Sotheby’s will put “The Enigma” up on the block. Weighing 555.55 carats, Sotheby’s said it is the largest faceted diamond of any kind to ever appear at auction.

The Engima is being sold without reserve, meaning there is no minimum bid required to win the stone, though the auction house said it believes the diamond could achieve £3 million-£5 million ($4.1 million-$6.8 million).

Both GIA and Gübelin issued reports for The Engima, identifying it as a natural fancy black diamond. 

GIA’s library said natural fancy black diamonds have a Mohs hardness of 10, like other diamonds.

They owe their color to numerous minute dark crystals or clouds of graphite, magnetite, hematite, or native iron, it added, and because they have so many inclusions, black diamonds are difficult to polish.

20220118_Enigma-diamond-Sothebys-insert.jpg
Another view of “The Enigma”

The Enigma is a free-form faceted stone, both labs stated in their reports. Its shape is inspired by the hamsa, a palm-shaped symbol that is a sign of protection.  

The hamsa is associated with the number five, reflected in the diamond’s 555.55 carats as well as its 55 facets.

In 2004, when it issued the grading report, GIA said The Enigma was “the largest fancy black, natural color and largest diamond” it had graded to date, and Gübelin said it was the largest faceted diamond it had examined to date. 

The stone was also listed as the largest cut diamond in the world in the 2006 Guinness Book of World Records.  

 Related stories will be right here … 

The diamond has never been seen on the market nor has it been exhibited to the public, but now “The Enigma” will take center stage as part of a dedicated online-only auction at Sotheby’s.

Sotheby’s unveiled the diamond Monday. It will be on view at the Dubai International Financial Centre from Jan. 17-20, after which it will travel to Los Angeles from Jan. 24-26 and then London from Feb. 2-9.

The one-lot auction will be open for online bidding from Feb. 3-9.

Sotheby’s will again accept cryptocurrency as payment, following the sale of the “10138 The Key” for a record $12.3 million via cryptocurrency last year in Hong Kong. 

The Latest

Saks Fifth Avenue door sign
MajorsMar 27, 2026
Saks Global Has Changed Its Mind About Closing These 3 Stores

Two Saks Fifth Avenue locations, one in Florida and one in California, and one Neiman Marcus store are off the chopping block.

Jimmy West celebrating 40 years with Leading Jewelers Guild
IndependentsMar 27, 2026
Jimmy West, Longtime LJG Executive Director, Dies at 72

West, who started in the art department at the Leading Jewelers Guild in 1979, is remembered for his patience, kindness, and dedication.

Itä Yari Whirl Ring Tesoro
CollectionsMar 27, 2026
Itä’s ‘Yarí Whirl’ Ring Tells Every Side of the Story

In the “Tesoro” version of the ring, our Piece of the Week, each side of the gold hexagonal nugget has a unique colored gemstone design.

GIA iD100®
Brought to you by
Protect Your Customers and Your Business

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

Citizen Watch America President Jeffrey Cohen
WatchesMar 26, 2026
Q&A: Citizen Watch America President Jeffrey Cohen on Eco-Drive’s 50th Anniversary

Cohen discusses the evolution of Citizen’s light-powered technology, the brand’s cross-generational appeal, and tariffs.

Weekly QuizMar 26, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Peter Smith Essentially Human: On Sales and Salespeople
IndependentsMar 26, 2026
Peter Smith Pens Book on Human Behavior in Sales

“Essentially Human: On Sales and Salespeople" reveals the underlying human traits and behaviors of the most successful sales professionals.

Lionheart Cassandane Collection Campaign
CollectionsMar 26, 2026
Lionheart Celebrates 13 Years of ‘Cassandane’

The collection features symbols of love, luck, and light, based on the story of Queen Cassandane and Cyrus the Great of Persia.

TopImageCrop.jpg
Brought to you by
Is This You? Every Jeweler Has This Problem; We Have the Solution.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

Instappraise NAJA
Events & AwardsMar 26, 2026
NAJA, Instappraise Introduce New Scholarship

It’s the third scholarship to be launched as part of the partnership to help appraisers advance their professional credentials.

CASE Awards Graphic
Events & AwardsMar 26, 2026
JA Still Accepting Entries for 2026 CASE Awards

The deadline for entries in the jewelry design competition has been extended to April 3.

Industry journalist Rob Bates
SourcingMar 25, 2026
Rob Bates Steps Down as JCK News Director

After 28 years with JCK, the veteran industry journalist is launching his own publication on Substack called The Jewelry Wire.

AMNH Beryl
GradingMar 25, 2026
New York’s Natural History Museum, Wiley To Build Minerals Database

Wiley said the project will give scientists worldwide access to the American Museum of Natural’s History renowned mineral collection.

Boochier Flower Puff Campaign
CollectionsMar 25, 2026
Boochier Turns Flower Friendship Bracelets Into Fine Jewelry

The “Flower Puff” collection looks to beaded flower friendship bracelets from childhood, turning the silhouette into nostalgic fine jewelry.

Community for Ethical Jewelry logo
Policies & IssuesMar 25, 2026
Community for Ethical Jewelry to Host Bench Jeweler Shortage Webinar

Set for April 2, the webinar will discuss how the jewelry industry can address the workforce gap.

Lisa Bayer
IndependentsMar 24, 2026
Lisa Bayer, Illustrator and Beloved Member of the Muse Family, Dies at 64

Bayer, founder of Lisa Bayer Designs, is remembered as “a bright light in every room.”

AGTA GemFair Tucson
SourcingMar 24, 2026
AGTA Solidifies Tucson Dates For 2027-2029

The next three editions of AGTA GemFair Tucson will feature a five-day show that includes Sunday.

Tom Heap
WatchesMar 24, 2026
Christie’s Names New Senior Specialist, Watches

Former Sotheby’s executive Tom Heap has taken on the London-based role.

NYPD robbery media
CrimeMar 23, 2026
NYPD Looking for 3 Jewelry Store Robbery Suspects

The group of women allegedly robbed two Catbird stores and one Gorjana location on the afternoon of March 9.

Georgia May Jagger in Tommy Hilfiger campaign
FinancialsMar 23, 2026
Movado’s Q4 Sales Rise As Demand Grows From Younger Shoppers, Women

Movado CEO Efraim Grinberg noted continued strength in the fashion watch and accessible luxury segments in the U.S.

Marco Bicego Art of Craft Campaign Imagery
TrendsMar 23, 2026
Marco Bicego’s New Campaign Showcases ‘The Art of Craft’

After celebrating 25 years in 2025, the campaign marks a new chapter for the jewelry brand with the message that “Identity Creates Value.”

Couture Time to Watches logo
Events & AwardsMar 23, 2026
These Watch Brands Are Heading to Couture This Year

Couture and Time to Watches announced the watch brands, from big names to independents, attendees will see at the show.

Macy’s New York City Herald Square flagship
FinancialsMar 20, 2026
Macy’s Turnaround Plans Shows Promise, Boosted by Bloomingdale’s

Plus, why Saks Global’s bankruptcy may have given Bloomingdale’s an edge.

Tiffany & Co.’s Three Jean Schlumberger for Tiffany & Co. Archives Brooches
TrendsMar 20, 2026
‘Frankenstein’ Costume Designer Is Bejeweled In Brooches for Oscars Win

Costume designer Kate Hawley wore three archival Tiffany & Co. brooches, our Pieces of the Week, while accepting her first Oscar.

Women wearing Zales jewelry
FinancialsMar 19, 2026
Signet Jewelers to Close 100 Stores, Shutter James Allen Banner

The jewelry retailer announced changes to its store network and brand portfolio during its fourth-quarter earnings call.

Hand holding shopping bags
SurveysMar 19, 2026
NRF Forecasts 4% Retail Sales Growth in 2026

From a weaker labor market to inflation, NRF Chief Economist Mark Mathews gave insight on what retailers can expect this year.

26.36 carat round brilliant cut white diamond
AuctionsMar 19, 2026
26-Carat Diamond Tops $1M at Auction

The historic stone, which sold at Elmwood’s in London, is the largest white diamond to be offered on the U.K. market in more than a decade.

JCK Rocks Nelly Graphic
Events & AwardsMar 19, 2026
JCK Rocks To Ride With Nelly

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach in Las Vegas on May 31.

×

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