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

American Gem Trade Association logo
GradingOct 07, 2026
AGTA Extends Deadline for 2026 Spectrum Awards Entries

Participants now have until Oct. 14 to complete their submissions.

Stock image a police car
Policies & IssuesOct 06, 2026
6 Charged in Connection to String of New Jersey Smash-and-Grabs

The alleged thieves used crow bars and sledgehammers to smash into jewelry stores across the state.

The Retail Smiths Principal Partner Sherry Smith
ColumnistsOct 06, 2026
Sherry Smith: Is the Consumer Really Trading Up?

Ahead of the holidays, Smith urges jewelers to take a hard look at who’s buying jewelry, what they’re purchasing, and who’s stopped buying.

1872 x 1052 Gemolite.jpg
Brought to you by
Meet Gemology’s Next Generation Microscope: GIA® Gemolite® NXT Professional Edition

Experience gemstones with greater precision and comfort than ever before.

Molly Stillman @fashionveggie, Beth Jones @bjonesstyle, Helene Cortez @cortezhelene, and Haley Jordan @haleyjordan12 
SourcingOct 06, 2026
DDG Taps Influencers for ‘My Diamond Does Good’ Campaign

In the new consumer-facing campaign, four fashion and lifestyle creators share the stories behind their natural diamond pieces.

Weekly QuizOct 01, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Bryan Cowan and Tom Schwartz
MajorsOct 06, 2026
Frederick Goldman Names COO, CMO

FGI President John Orrico is also leaving the company after more than 13 years.

JIS Miami fall
Events & AwardsOct 06, 2026
JIS Fall Returns to Miami

The 2026 edition will feature presentations on alternative materials and design trends, as well as pop-up activations on the show floor.

Cover.jpg
Brought to you by
Your Piece Could Be the One Editors Talk About

Submit your pieces for a chance to win in this year's competition.

Gahcho Kue rough diamonds
SourcingOct 05, 2026
De Beers to Take Full Ownership of Gahcho Kué

It is the last fully operational diamond mine in Canada following the recent closures of Ekati and Diavik.

Sorellina Postscript Collection Campaign Imagery of Paper Plane Pendant
CollectionsOct 05, 2026
Sorellina Writes Another Love Letter for ‘Postscript’ Collection

The fine jewelry brand has expanded the collection that debuted at Couture with four new designs based on its most popular styles.

Bruce Bridges CIBJO
SourcingOct 05, 2026
Bruce Bridges Joins CIBJO Board

The AGTA president was elected for a two-year term on the board of directors.

Aerial image of the Lungwebungu River
SourcingOct 02, 2026
De Beers, National Geographic Society Renew Okavango Eternal Partnership

The partnership, a pledge to protect Africa’s Okavango River Basin, has been extended for an additional five years.

Pandora facility Vietnam front view
MajorsOct 02, 2026
Pandora Opens New $150M Manufacturing Facility in Vietnam

The new facility, its first outside of Thailand, will boost its manufacturing capacity by 50 percent.

Hearts On Fire Dream Heart Pendant
TrendsOct 02, 2026
Hearts On Fire Celebrates 30th Anniversary With Heart Pendant

The special-edition “Dream” pendant, our Piece of the Week, was created to mark Hearts On Fire’s 30-year milestone with 30 diamonds.

Surveillance images of robbery suspects
CrimeOct 01, 2026
Police Looking for 4 Suspects in $600K Smash-and-Grab Robbery

Dubai Jewelers in Springfield, Virginia, was once again the target of an armed robbery.

Rolex Oyster Perpetual Day-Date 40 in 18-karat Jubilee gold with aventurine dial
SurveysOct 01, 2026
Rolex Ranks Among Most Recommended Brands in US, Survey Says

YouGov’s 2026 U.S. Most Recommended Brands report’s out, and a fast-fashion giant is sitting at No. 1 while Rolex is just shy of the top 5.

Peoples Training & Research Centre Gujarat India
SourcingOct 01, 2026
Columbia Gem House Opens ‘Cutting Toward Change’ Fundraiser

Proceeds from its jewelry raffle will benefit an organization working in India to combat silicosis, a lung disease affecting stone cutters.

Jason of Beverly Hills Stanley Cup Championship Ring for Carolina Hurricanes
TrendsOct 01, 2026
Carolina Hurricanes’ Championship Ring Reveals Hidden Hockey Puck Pendant

The rings, crafted by Jason of Beverly Hills, celebrate the hockey team’s Stanley Cup win with design elements that honor its traditions.

Meredith Young Nebula ring
TrendsOct 01, 2026
Amanda’s Style File: October’s Color Range

This roundup of birthstone jewelry for October features vibrant tourmalines and opals with personality.

Time CEO Jessica Sibley, Botswana President Duma Boko, and Botswana Minster of Minerals and Energy Bogolo Joy Kenewendo in New York
SourcingSep 30, 2026
Botswana’s President, De Beers CEO Say Diamond Demand Is Recovering

President Duma Boko spoke at back-to-back events in the city last week, touting Botswana’s stability and the diamond “bounceback.”

Oscar Heyman A Living Archive Holiday Book
CollectionsSep 30, 2026
Oscar Heyman’s Holiday Book Is ‘A Living Archive’

The catalog showcases 112 new, one-of-a-kind pieces amid highlights from the jeweler’s historic archive.

Gemfields rubies
SourcingSep 30, 2026
Gemfields Posts $98.5M Loss, Writes Down Value of Ruby Mine

Its Montepuez Ruby Mining operation in Mozambique, which is not yielding enough high-quality rubies, has taken a $125 million hit.

Hand holding a gas pump
SurveysSep 30, 2026
Consumer Confidence Falls to 12-Year Low in September

Those surveyed were worried about the present and the future, with write-in responses mentioning high oil and gas prices.

JA New York sign
Events & AwardsSep 30, 2026
Jewelers of America, JA New York to Host Networking Event

The event will take place on the evening of Oct. 26 in New York City.

Christy Bromberg
IndependentsSep 29, 2026
Christy Bromberg, Longtime Gift Buyer for Underwood Jewelers, Dies at 68

She is remembered for her joie de vivre, upbeat personality, genuine interest in other people, and love of the Alabama Crimson Tide.

Matt Stuller
Events & AwardsSep 29, 2026
Matt Stuller to Receive 2027 Gem Award for Lifetime Achievement

The founder and executive chairman of Stuller Inc. is being honored for his impact on the jewelry industry at the 25th annual Gem Awards.

Emmanuel Raheb, CEO of Smart Age Solutions
ColumnistsSep 29, 2026
Your Holiday Marketing Has a Bridal Blind Spot

December is the most popular month to propose, and jewelers need to keep that in mind when planning their holiday marketing.

×

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