‘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.

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.
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.
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

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

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

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

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

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


With their durability, brilliance, and beauty, diamonds are the perfect stone for everyday birthstone jewelry.

The retailer failed to file its annual report on time and said it may issue a going concern warning.

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

Smith recounts a recent trip to the post office that included an uncomfortable, embarrassing, and public exchange between two employees.

John Cowley, who has more than 30 years of experience, is succeeding Tearle as the lab’s chief financial officer.

Founder Erica Silverglide has designed 35 colorful pieces set with fluorescing gemstones for the brand's first finished jewelry offering.

“Ukrainian Jewelry | Contemporary Jewelry and Art Jewelry from Ukraine” features 33 contemporary Ukrainian designers and studios.

“The Golden Now” campaign celebrates the here and now with the brand’s signature styles and a selection of its new pieces.

Signet confirmed that Caffie, president of Zales and Banter, and Bentzen, who headed Blue Nile, have left the company.

The antique jewelry dealer talks about the importance of including Black Americans in jewelry history and preserving their stories.

Both its mines faced challenges last year, from operational issues to disruptions in the market.

Iconic pieces, like the Mike Todd Diamond Tiara, appear in the superstar’s new music video for her song inspired by the actress.

The luxury retailer, which went Chapter 11 in January, announced Thursday that it has secured $500 million in exit financing.

The NouvelleBox ballroom will feature independent jewelry designers, including Lene Vibe, Wyld Box Jewelry, and Kiaia Limited.

The one-of-a-kind locket, our Piece of the Week, opens to reveal three hidden images to keep close to your heart.

The new facility was also designed to better serve its growing customer base in Canada.

The campaign is a tribute to the year 1893, when Kokichi Mikimoto created the world’s first cultured pearl.

It is the only GIA school to offer the GIA Graduate Gemologist program in Chinese.

The initiative connects veterans and parents returning to the workforce with careers in jewelry retail.

The wholesale manufacturer and precious metals refiner has appointed Michael Angelo as its new national sales representative.

Foundrae also accused the jewelry giant of copying its mood board style of marketing.

The Conference Board’s Consumer Confidence Index edged up, with optimism about the present outweighing worries about the future.



























