Auctions

These 8 Blue Diamonds Worth $70M+ Will Go Up for Auction

AuctionsOct 13, 2022

These 8 Blue Diamonds Worth $70M+ Will Go Up for Auction

“The De Beers Exceptional Blue Collection” will be sold across Sotheby’s jewelry auctions this year and through spring 2023.

20221013_DeBeers-Exceptional-Blues.jpg
These eight blue diamonds, weighing 32.09 carats total and valued at more than $70 million, will be auctioned off at Sotheby’s beginning next month through the winter and spring 2023.
New York—The upcoming auction season is definitely one for blue diamond lovers.

Sotheby’s has announced it will sell a group of eight fancy blue diamonds valued at more than $70 million total across its Magnificent Jewels auctions this year and into the spring.

“The De Beers Exceptional Blue Collection,” sourced and assembled by the diamond company, is appearing at auction for the first time.

The group is comprised of eight blue diamonds of various shapes and weights, ranging in size from a 1.22-carat oval brilliant-cut to an 11.29-carat step-cut diamond, for a total weight of 32.09 carats among them.

Three of the diamonds will be offered this year: the 5.53-carat stone will be a highlight of Sotheby’s Magnificent and Noble Jewels auction in Geneva on Nov. 9, while the 3.24-carat diamond and the 2.08-carat diamond will be offered in New York on Dec. 7.

The full list of the eight diamonds and their estimates are as follows.
--11.29-carat step-cut fancy vivid blue (estimated at $28 million-$50 million)
--5.53-carat cushion brilliant-cut fancy vivid blue (estimated at $11 million-15 million)
--4.13-carat step-cut fancy intense blue (estimated at $2.5 million-$3.5 million)
--3.24-carat cushion brilliant-cut internally flawless fancy vivid blue (estimated at $5 million-$8 million)
--3.10-carat cushion brilliant-cut fancy vivid blue (estimated at $4.5 million-$5 million)
--2.08-carat cushion-cut fancy intense blue (estimated at $1.2 million-$1.5 million)
--1.50-carat round brilliant-cut fancy intense blue (estimated at $750,000-$1 million)
--1.22-carat oval brilliant-cut fancy intense blue (estimated at $600,000-$800,000)

De Beers and Diacore jointly paid $40.36 million for five rough blue diamonds from the Cullinan mine weighing 85.62 carats total in November 2020.

Over almost two years, Diacore cut and polished the five rough stones to create the eight blue diamonds in the collection Sotheby’s is now presenting. 

 Related stories will be right here … 

They will be on display in Hong Kong from Oct. 17-19, followed by Singapore from Oct. 20-21, Taipei from Oct.26-27, and Geneva from Nov. 4-8.

“I have remained in awe of ‘The De Beers Exceptional Blue Collection’ since the first moment I set eyes on it,” said Olivier Wagner, head of Sotheby’s Magnificent Jewels Auctions in Geneva.

“The market for colored diamonds and precious gemstones has never been stronger, so we are absolutely thrilled to be offering the first diamond of this superb collection as one of the star highlights of our Magnificent Jewels and Noble Jewels auction next month in Geneva. This important gem will, I am sure, captivate all collectors of exceptional gemstones.”

News of the diamond collection comes less than a week after the record-breaking sale of the “Williamson Pink Star” at Sotheby’s.

The 11.15-carat fancy vivid pink diamond sold for more than $57 million in Hong Kong last Friday. With a per-carat sale price of roughly $5.2 million, it now holds the price-per-carat record for any diamond or gemstone sold at auction.

Sotheby’s also sold the De Beers Blue in April, a 15.10 carat step-cut fancy vivid blue diamond that went for $57.5 million

The Latest

Collage of NationalJeweler.com’s most-read stories of 2025
EditorsDec 31, 2025
The Top 5 Stories of 2025

Articles about crime, engagement rings, and a necklace worn in the World Series generated the most interest among readers.

Becka Johnson Kibby
MajorsDec 30, 2025
Becka Johnson Kibby to Lead Edge Retail Academy

As part of the leadership transition, Sherry Smith will take on the role of vice president of coaching strategy and development.

Stock image of rough diamonds from Diavik mine in Canada
SourcingDec 30, 2025
India Chosen as KP Chair for 2026

It marks the third time the country has headed the Kimberley Process. Ghana will serve as vice chair.

Recipients Collage 2025 - NJ (1872 x 1050 px) (1872 x 1052 px).png
Brought to you by
Impacting Tomorrow Today

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

Bulova x Stetson collection
WatchesDec 30, 2025
Bulova, Stetson Collab on Watches With Western Flair

The new Bulova x Stetson designs highlight two animals often associated with the American West—the bison and the Texas Longhorn.

Weekly QuizDec 23, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Rahaminov Diamonds Pop-Up at Yamron Jeweler
CollectionsDec 30, 2025
Rahaminov Diamonds Pops Up in Florida

Its residency at Yamron Jewelers will run through May 2026.

In Memoriam collage 2025
IndependentsDec 29, 2025
In Memoriam: Industry Friends We Lost in 2025

From influential executives to innovative designers, we pay tribute to the people we said goodbye to this year.

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

Tanishq Orlando store exterior
MajorsDec 29, 2025
Tanishq Opens New Stores in Florida, Virginia

The retailer is expanding into areas with large Indian and South Asian populations.

Nanis Madonna di Campiglio Flagship
MajorsDec 29, 2025
Nanis Opens First Flagship Store

The Italian brand has opened its first flagship amid the peaks of the Dolomites in Madonna di Campiglio, Italy.

Amethyst Geodes Unearthed: Raw Beauty
SourcingDec 29, 2025
‘Unearthed: Raw Beauty’ Exhibition Opens at LA Museum

The new curation at the Natural History Museum of Los Angeles County showcases rare gem and mineral specimens in their uncut, natural state.

Stock image of gavel
CrimeDec 24, 2025
LA Jewelry District Couple Pleads Guilty to Hiding Millions from IRS

The couple pleaded guilty to concealing at least $127 million in cash transactions at its precious metals businesses.

People shopping in winter clothes
SurveysDec 24, 2025
Consumer Confidence Falls Again in December

Consumers shared concerns about prices, inflation, tariffs, trade, and politics in the survey’s write-in response section.

Hana Kaneko rings
Events & AwardsDec 24, 2025
NYC Jewelry, Antique, & Object Show Announces Winter Event

The new show will take place Jan. 23-25, 2026.

Brian Patrick Gilbertson
SourcingDec 23, 2025
Mining Titan Brian Gilbertson Dies at 82

The former BHP Billiton leader and Gemfields chairman is remembered for his influential leadership throughout his 50-year mining career.

Costume Designers Guild Award By Bulgari
Events & AwardsDec 23, 2025
Bulgari Reimagines Costume Designers Guild Award

The LVMH-owned brand has partnered with the costume design union to revamp its award for 2026.

Kering logo
MajorsDec 23, 2025
Kering to Acquire Stake in Raselli Franco Group

The luxury titan inked a deal to acquire an initial minority stake in the jewelry manufacturer with a pathway to full ownership by 2032.

For Future Reference Vintage
MajorsDec 23, 2025
For Future Reference Vintage Enters Bloomingdale’s

The company’s curation of unsigned vintage and estate jewelry debuted at the Bloomingdale’s in Costa Mesa, California.

Counterfeit Cartier and Audemars Piguet watches
CrimeDec 22, 2025
Customs Seizes Hundreds of Fake Rolex, Cartier Watches

In the recent multi-shipment seizure, CBP also found counterfeit Audemars Piguet, Moncler, and Chrome Hearts items.

Helzberg new store concept rendering
EditorsDec 22, 2025
How Helzberg Is Reimagining Its Stores

Helzberg’s Chief Retail Officer Mitch Maggart shared details about its tests of a new store concept rooted in an elevated luxury experience.

Graphic for the 2025 Year-End Webinar
Recorded WebinarsDec 22, 2025
2025 Jewelry Rewind: Looking Back on an Eventful Year

Jewelers of America execs and National Jeweler editors discuss tariffs, the sky-high gold price, and the engagement that broke the internet.

Pair of Ippolita Lollatini earrings
MajorsDec 19, 2025
MadaLuxe Group Acquires Ippolita

The luxury goods company said founder Ippolita Rostagno will remain at the brand’s helm.

Bulgari CEO Laura Burdese
MajorsDec 19, 2025
LVMH Names New Bulgari CEO

Laura Burdese, who joined the Italian luxury brand in 2022, will take on the role in July.

Harwell Godfrey Lil Buddies
EditorsDec 19, 2025
2025 Jewelry Superlatives: A Yearbook-Style Year in Review

The National Jeweler editors revisit the most noteworthy industry happenings and design trends from 2025.

Audemars Piguet Grosse Pièce
AuctionsDec 18, 2025
Audemars Piguet Reclaims Historic Pocket Watch at Auction

It purchased the “Grosse Pièce,” an ultra-complicated Audemars Piguet pocket watch from the ‘20s, for a record-breaking price at Sotheby’s.

Diamond ring in parts
Lab-GrownDec 18, 2025
Kira Jewels Debuts Custom Lab-Grown Diamond Jewelry Service

The lab-grown diamond grower now offers custom engagement and fashion jewelry through its Kira Custom Lab Jewelry service.

Terry and Cindy Chandler at AGS Conclave
EditorsDec 18, 2025
Terry Chandler Looks Back on 40 Years of Opportunity, Change, and Friends

Chandler got his start at Michelson Jewelers and has served as DCA president and CEO since 2001. He will retire at the end of the month.

×

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