Sourcing

1,109-Carat Diamond Expected to Sell for More Than $70M

SourcingMay 05, 2016

1,109-Carat Diamond Expected to Sell for More Than $70M

The tennis ball-sized rough stone, which will be auctioned at Sotheby’s in June, could yield the largest top quality polished diamond in the world.

20160505_Lesedi-closeup.jpg
This is “Lesedi la Rona,” which means “Our Light” in Setswana, one of the official languages of Botswana. The massive rough diamond could sell for more than $70 million and yield the largest high-quality polished diamond in the world. (Photos by Donald Bowers/Getty Images for Sotheby’s)

London--The tennis-ball sized rough diamond unearthed in Botswana in November is going up for auction at Sotheby’s London in June, and it is expected to sell for more than $70 million.

Discovered at Lucara Diamond Corp.’s Karowe Mine, the 1,109.67-carat stone, named “Lesedi la Rona,” or “Our Light,” is the largest rough diamond found since the 3,016.75-carat Cullinan Diamond in 1905. (The diamond was 1,111 carats when first unearthed but lost about 2 carats during the cleaning process, which is normal, a Sotheby’s spokesperson said.)

The Cullinan yielded nine major diamonds, all of which were set in the Crown Jewels of the United Kingdom, including the 530.20-carat pear-shaped Great Star of Africa. The Star is the largest “top quality,” meaning high color and clarity, polished diamond in the world. (The world’s largest cut and polished diamond of any color is the 545.67-carat Golden Jubilee, which is a brown stone.)

But the record held by the Star could soon fall.

Sotheby’s said it commissioned independent reports on the potential yield of Lesedi la Rona from the Gem Certification and Assurance Lab (GCAL), the New York-based grading laboratory run by Don Palmieri, and Diamex Inc./Crodiam Consulting DMCC.

While the reports are not being made public at this time, a few details were released on Wednesday, including the fact that experts believe that the Lesedi la Rona could top the Great Star of Africa in size.

The reports also state that there is a “high probability” that the polished diamonds cut from the 1,109-carat rough will be D color.


The Gemological Institute of America said that the diamond’s “top color and transparency exemplify the ‘limpid’ appearance commonly associated with Type IIa diamonds,” the most chemically pure diamonds.

The Lesedi la Rona will be on view at Sotheby’s New York this coming Saturday, May 7. It will also be on view at the auction house in London between June 18 and 28.

The diamond will be offered for sale on the evening of June 29 at Sotheby’s London in an auction that’s open to the public, marking something else that’s unusual about this once-in-a-lifetime diamond find: that it’s being sold at an auction that’s open to the public, not limited to the trade.

“Every aspect of this auction is unprecedented,” David Bennett, the worldwide chairman of Sotheby’s jewelry division said. “Not only is the rough superlative in size and quality, but no rough remotely
of this scale has ever been offered before at a public auction.”
Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

Hand holding holiday shopping bags
SurveysSep 26, 2025
Online Shopping, Influencers to Drive Holiday Spending, Mastercard Says

Holiday sales growth is expected to slow as consumers grapple with inflation and tariff-related uncertainty.

Austin Shines Jewelry Award
Events & AwardsSep 26, 2025
Winners of Austin Jewelry Design Contest Announced

Jamie Turner Designs is among the winners of the local “Austin Shines” contest, hosted by Eliza Page, a jewelry store in Austin, Texas.

Kwit Square Signet Pinky Ring in Red and Azure
TrendsSep 26, 2025
Piece of the Week: Kwit Jewelry’s Square Signet Pinky Ring

The red and azure colorway is one of many fun enamel pairings offered, bringing whimsy to the classic style of a monogramed signet ring.

reDollar-fine-jewelry-department.jpg
Brought to you by
reDollar.com Is Rolling Out the Next Level Jewelry, Diamond & Watch Consignment Program

With their unmatched services and low fees, reDollar.com is challenging some big names in the online consignment world.

Jewelers of America Fly In
Policies & IssuesSep 25, 2025
JA CEO Provides Tariff Update Following Annual Fly-In

A trade deal with Switzerland seems probable, but reaching an agreement with India remains a challenge, David Bonaparte said.

Weekly QuizSep 25, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Kira Jewels Growing Rowing Machines
Lab-GrownSep 25, 2025
Kira Jewels Expands Lab-Grown Diamond Production

The manufacturer is adding 1,400 chemical vapor deposition (CVD) reactors to its growing facility in India.

Alex Moss SoHo store
IndependentsSep 25, 2025
Alex Moss’ New Flagship Brings Bold Jewels to SoHo

The jeweler to the stars has worked with Drake, A$AP Rocky, Tyler the Creator, and other celebrities.

japac-btyb.png
Brought to you by
Rallying Call for the Jewelry Industry on Tariffs and Other Key Issues

Jewelers of America is leading the charge to protect the industry amidst rising economic threats.

Matthew Wilson, Kavin Kulamavalava, and a Elmasolvex VA
WatchesSep 25, 2025
Wilson & Son Jewelers Donates to the Horological Society of New York

The Scarsdale, New York-based jeweler donated a professional-grade watch cleaning machine.

Representatives of India’s Gem and Jewellery Export Promotion Council and Indian government leaders
Policies & IssuesSep 24, 2025
Tariffs Throw Diamond Trade Into Disarray

The 50 percent tariffs on diamonds shipped from India to the U.S. have pushed midstream manufacturers to the edge.

Policies & IssuesSep 24, 2025
For Jewelry Manufacturers, Higher Tariffs Create Long-Term Worries

They are trying to balance the need to sustain well-established relationships with the pressure higher tariffs have put on margins.

Guest lecture for people with disabilities at the Jewelex factory
SourcingSep 24, 2025
A Helping Hand: An Effort to Boost Inclusivity in the Industry

Jewelry manufacturer Jewelex has partnered with JOSH, an industry training center, on a program for people with disabilities.

Greenwich St. Jewelers Estate Capsule Campaign
CollectionsSep 24, 2025
Greenwich St. Jewelers Goes Back in Time With First Estate Collection

The collection includes pieces dating back to the Victorian and Art Deco periods as well as mid-century and late 20th-century designs.

Marcus ter Haar
Policies & IssuesSep 24, 2025
Diamonds Do Good Names Marcus ter Haar as President-Elect

He previously served as co-chair of the nonprofit’s beneficiary committee.

Jane Goodall Brilliant Earth campaign
CollectionsSep 24, 2025
Brilliant Earth’s New Jane Goodall Collection Calls for Peace

Its second collaboration with the conservationist features jewelry with dove and olive branch motifs.

SRK Kriam Pharma
SourcingSep 24, 2025
SRK Launches Kriam Pharma

The diamond manufacturer’s new company will provide accessible and affordable high-quality medicines across India.

Emmanuel Raheb, CEO of Smart Age Solutions and National Jeweler columnist
ColumnistsSep 23, 2025
Quiet Luxury: What Fall’s Top Trend Means for Jewelers

Emmanuel Raheb shares tips on how a jeweler’s showcases, marketing, and social media presence can whisper, instead of shout.

Claire’s storefront
MajorsSep 23, 2025
Ames Watson Completes $140M Acquisition of Claire’s

The private equity firm has a plan to revive the mall staple.

Super Smalls Super Book of Gems, Maria Dueñas Jacobs, and Bianca Gottesman
SourcingSep 23, 2025
Super Smalls’ New Book Introduces Kids to Gems, Fine Jewelry

The “Super Book of Gems” dives into the Mohs Hardness Scale, the Four C’s, and designs from jewelers like Cartier and Bulgari.

Mattioli CEO Claudio Pasta
MajorsSep 23, 2025
Mattioli Names Kering Exec as New CEO

Claudio Pasta will take the lead at the Italian fine jewelry brand, succeeding company founder Licia Mattioli.

Monique Lhuillier fashion jewelry Kay
CollectionsSep 23, 2025
Monique Lhuillier Adds Fashion Jewelry to Kay Jewelers Line

The new lab-grown diamond jewelry offering is the latest expansion of the designer’s “Bliss” collection.

Rio Tinto tender
SourcingSep 22, 2025
Rio Tinto Announces Final ‘Beyond Rare’ Tender

The miner is honoring the end of an era with an offering of 52 lots from the now-closed Argyle and the soon-to-close Diavik mines.

Vibhor and Alor logos
MajorsSep 22, 2025
Jewelry Manufacturer Vibhor Acquires Alor

The California-based fine jewelry brand will retain its identity post-acquisition, with new collections launching next year.

Gurhan Crown Gold Aquamarine Peacock
CollectionsSep 22, 2025
Gurhan's Collection is an 'Untamed' Zoo

The “Untamed” collection centers on carved gemstone jewelry depicting a range of animals embodying one of the four elemental forces.

Community for Ethical Jewelry logo
Policies & IssuesSep 22, 2025
Ethical Metalsmiths Has a New Name

Founded in 2004, the organization is now called the Community for Ethical Jewelry.

Madison Keys
EditorsSep 19, 2025
These Female Athletes Had the Best Jewelry of the Summer

From Coco Gauff’s hoops to Madison Keys’ diamond medallion, these are Senior Editor Lenore Fedow’s standout jewelry looks of the season.

Vanessa Fernández Studio Curva Wrap Hoops
CollectionsSep 19, 2025
Piece of the Week: Vanessa Fernández Studio’s ‘Curva’ Wrap Hoops

The trendy earrings feature asymmetrical drops, one with a grossular garnet and the other with a diamond.

×

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