‘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

From a Betta fish brooch to a “dragon’s trove” of zircon eggs, here are seven pieces that’ve stuck with Associate Editor Lauren McLemore.

Groundbreaking New Mexico Governor-elect Deb Haaland wore the earrings, our Piece of the Week, when she declared victory on Tuesday.

Jost goes on an epic journey, traversing rough seas and encountering a cyclops, to discover the perfect holiday gift.

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

Sponsored by GCAL by Sarine


From shrinking budgets to AI elves, here are five takeaways from holiday reports by Bain, Adobe, Mastercard, NRF, and insights from YouGov.

The designers combined their talents for Little Pet Portraits, hand-painted miniatures of our best friends set in a piece of jewelry.

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

Its non-bridal fine jewelry remains the star of the show, recently launching new collections inspired by Elizabeth Taylor and Jane Goodall.

“Joy: The Swarovski Musical” features Ariana Grande as the leading lady in scenes inspired by classic musical montages.

The lab will bring back its complimentary next-day service for some reports starting next week.

A Pennsylvania woman failed to declare a ring and a bracelet, discarding the boxes and receipts to conceal the purchases, officials said.

New collections and relevant marketing pushed the company forward, while Pandora’s lab-grown diamond sales continue to lag.

The citywide celebration, slated for Nov. 16-22, is set to host more than 175 events, including live jewelry-making demos.

Lanessa Elrod, former president and CEO of Louis Vuitton Americas, has stepped into the role as the retailer celebrates 125 years.

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

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

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

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

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

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

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

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

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

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

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


























