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

Arthur Klein
IndependentsNov 03, 2026
Longtime Jewelry Marketer Arthur Klein Dies at 89

Klein, who had his own marketing agency and worked for Gabriel & Co. and Trans American Diamond, is remembered as a kind man.

Zadok Jewelers
IndependentsNov 03, 2026
Zadok Jewelers Toasts To 50 Years With Diamond Bracelet Giveaway

To enter the giveaway, locals can purchase a featured beverage from one of eight participating restaurants in Houston and Austin, Texas.

David Yurman Gem Awards Grant 2027 Graphic
Events & AwardsNov 03, 2026
David Yurman Gem Awards Grant Opens 2027 Applications

The grant recipient will be awarded $50,000 as well as mentoring meetings with executives at David Yurman and other industry executives.

overnight btyb 1026.png
Brought to you by
How Overnight Mountings’ Bridal Builder Makes Custom Engagement Ring Design Easier to Sell

With customization becoming more expected in engagement ring shopping, the Bridal Builder makes the process tangible.

Kirstin Viland, Joanna Kovacs, Shari Lukacs
Events & AwardsNov 03, 2026
NAJA, Instappraise Name 2026 Scholarship Winners

The winners include a non-NAJA member seeking training, a member beginning NAJA courses, and a member becoming a Certified Master Appraiser.

Weekly QuizOct 29, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Fake Audemars Piguet watch
CrimeNov 02, 2026
Customs Seizes More Than 400 Fake Audemars Piguet Watches

It is one of several seizures of counterfeit jewelry and watches by U.S. Customs and Border Protection officials in Louisville this year.

Jewelers of America new board members
MajorsNov 02, 2026
Lawrence Bock, Caryl Capeci, Amanda Coleman-Phelps Join JA Board

Jewelers of America announced the additions to its board of directors following its annual general meeting, held last week.

DeBeersICONS_TITLE1_CUSTOMCONTENT_1872x1052 (1).jpg
Brought to you by
A Diamond Is Forever Launches 2026 Holiday Campaign Championing Natural Diamonds

A Diamond Is Forever's holiday campaign reimagines natural diamond icons for a new generation celebrating individuality.

Kristi Yamaguchi Wearing Always Dream Collection
CollectionsNov 02, 2026
Olympian Kristi Yamaguchi, Heller Jewelers Expand ‘Always Dream’ Collection

The jewelry collection supports Yamaguchi’s Always Dream foundation, which provides reading and educational resources to families in need.

2026 AGTA Spectrum & Cutting Edge Awards Best Of Winners
Events & AwardsOct 30, 2026
Illuminating Carved Paraiba Pendant, Suite of Moonstones Wow at Spectrum Awards

Spectrum’s “Best of Show” honors went to a 101-carat Paraiba carved to look like Medusa that has a magnet-activated LED light.

Edina Kiss Eye Pendants on Charm Necklace
TrendsOct 30, 2026
Edina Kiss’ Pendants Say ‘Eye’m Watching You’

Our Halloween Pieces of the Week are four “Eye” pendants, each set with colorful gemstones.

Alexis Hoopes
MajorsOct 30, 2026
The RealReal Hires Former eBay Exec as New Chief Merchandising Officer

Alexis Hoopes expanded eBay’s “Authenticity Guarantee” program during her tenure.

Rolex store exterior Bellevue Washington
WatchesOct 29, 2026
Bucherer Opens Rolex Boutique in Washington State

The Rolex-owned retailer’s new 4,700-square-foot store’s façade honors the Pacific Northwest’s evergreen forests.

Norma Wellington spider web pendant
TrendsOct 29, 2026
Amanda's Style File: All Treats, No Tricks

Get into the Halloween spirit with this roundup of 13 spooky jewels.

Ann Cahoon
MajorsOct 29, 2026
Gesswein Hires Longtime Bench Jeweler, Educator Ann Cahoon

Cahoon was appointed strategic account and educational program manager at Gesswein, which recently joined Continental Buying Group.

Tiffany & Co. Love Is a Gift Holiday Campaign with Amanda Seyfried
MajorsOct 29, 2026
Amanda Seyfried Stars In Tiffany & Co.’s Holiday Campaign

Tiffany & Co.’s latest ambassador makes her debut in its “Love Is a Gift” holiday campaign.

Graphic of cauldron and cat with jewelry in bubbles
EditorsOct 28, 2026
These Wicked Jewels Will Cast a Spell on You

For her annual Halloween story, Senior Editor Lenore Fedow highlights bewitching jewels fit for a witch that go from day to unholy night.

Jaythan Gilder and Stolen Tiffany & Co. Earrings
CrimeOct 28, 2026
Man In Florida Who Swallowed Tiffany & Co. Earrings Convicted

Jaythan Gilder was found guilty of robbery and grand theft after stealing and then ingesting nearly $800,000 worth of Tiffany & Co. jewelry.

Gas station
SurveysOct 28, 2026
Consumer Confidence Up in October as Gas Prices Ease

Consumer confidence remains on the long-term downward trend that’s persisted over the past few years, said a Conference Board economist.

Stuller Magic of the Moment Holiday Campaign
MajorsOct 28, 2026
Stuller’s Holiday Campaign Lets the ‘Magic of the Moment’ Shine

The holiday campaign includes key jewelry trends, a curated holiday gift guide, and resources to help jewelers prepare for holiday shoppers.

De Beers Desert Diamonds Icons Campaign Designer Showcase
SourcingOct 27, 2026
De Beers Celebrates the Holidays With New ‘Desert Diamonds’ Campaign

The “Icons” holiday campaign spotlights four classic diamond jewelry styles reimagined in “Desert Diamond” tones.

Mervis Diamond Importers store
IndependentsOct 27, 2026
Solomon Brothers Acquires Mervis Diamond Importers

Solomon Brothers, which has three stores in the Metro Atlanta area, said it may continue to acquire other independent jewelers.

Woman holding testing swab
IndependentsOct 27, 2026
Gabriel & Co. Supports Charity Partner DKMS With Gala, New Jewels

The fine jewelry brand raised $2.3 million at its annual gala that supports the nonprofit’s fight against blood cancer and blood disorders.

Sarin Bachmann and Julie Walsh
Events & AwardsOct 27, 2026
JFC Announces 2027 ‘Facets’ Honorees

The annual fundraising event is slated for June 6, 2027, at The Venetian Resort in Las Vegas.

Ali Ahn in Bliss Lau Vantage Collection Campaign
CollectionsOct 26, 2026
Bliss Lau’s ‘Vantage’ Point Is the Hawaiian Horizon

In her “Vantage” collection, Lau explores heritage, identity, and inner strength through designs featuring blue-green Guatemalan jade.

Behind the scenes shot of Tiffany & Co.’s Design and Innovation Workshop
MajorsOct 26, 2026
Tiffany & Co. Takes Consumers Behind the Scenes

The jeweler gave the public backstage tours of its flagship store and its design and innovation workshop as part of LVMH’s open house.

Jewelers for Children Halloween contest
Events & AwardsOct 26, 2026
Support JFC’s ‘Monster Mash Challenge,’ If You Dare

Vote for which jewelry professional should dress up as a monster to support Jewelers for Children’s annual Halloween fundraiser.

×

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