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

Alnesha Bianca Handy and James Arthur Graves Graham Jr.
CrimeAug 25, 2026
Florida Woman Scammed Out of $1.5M in Jewelry, Precious Metals

Two suspects have been arrested in connection with the complex phone scam.

Technology Therapy Group Founder and CEO Jennifer Shaheen
ColumnistsAug 25, 2026
Proof Before Purchase: The Gen Z Way to Buy

In her first column for National Jeweler, Jennifer Shaheen asks jewelers if they know how to connect with the next generation of consumers.

SSEF logo
Events & AwardsAug 25, 2026
SSEF Opens 2026 Applications for Gemology Education Scholarships

The annual awards cover tuition for an on-site educational course at the Swiss lab, as well as flights and lodging.

Cover.jpg
Brought to you by
Your Piece Could Be the One Editors Talk About

Submit your pieces for a chance to win in this year's competition.

Brent Neale x Blackberry Farm Blackberry Pendants
TrendsAug 25, 2026
Brent Neale Celebrates Blackberry Farm’s Anniversary With Jewelry

The jeweler partnered with the Tennessee resort to honor its 50th anniversary with limited-edition blackberry pendants and earrings.

Weekly QuizAug 20, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Genna Zimmer Reeds Jewelers
EditorsAug 24, 2026
Q&A: Reeds Jewelers VP Genna Zimmer on 80 Years in Business

The third-generation jeweler shared how the North Carolina retailer is celebrating this milestone and the love story that started it all.

Rio Grande Metalwerx Argentium Silver leaves
Events & AwardsAug 24, 2026
Rio Grande, MetalWerx Host Argentium Silver Workshop

The class, led by renowned metalsmith Cynthia Eid, highlighted Argentium silver as an alternative to gold amid high prices.

1872-x-1052-July-ad (1).png
Brought to you by
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying Events

Retailers are seeking new ways to attract customers, increase traffic, and create revenue – Estate buying events are a popular solution.

Jewelry at JIS Miami
Events & AwardsAug 24, 2026
JIS Miami Opens Fall 2026 Registration

The show is slated for Oct. 16-19 at the Miami Beach Convention Center.

Francesca Villa Empress Joséphine Necklace
CollectionsAug 24, 2026
Francesca Villa Honors Napoleon, His Empresses In New Capsule

The “Empresses” capsule uses 19th-century medals depicting Napoleon, Joséphine, and Marie-Louise across five one-of-a-kind pieces.

Interior of Dick’s Sporting Goods store
SurveysAug 21, 2026
These Are 2026’s Hottest Retailers, Says NRF

The retailers at the top of the list offer affordable products and fun, discovery-fueled experiences.

Daniel Bing
WatchesAug 21, 2026
Bremont Names Former Vacheron Constantin Exec CMO

Daniel Bing was formerly the marketing director for the Americas at Vacheron Constantin.

Bijules x Kamyen Topspin Tennis Bracelet in Grass Green
CollectionsAug 21, 2026
Bijules, Kamyen Serve Up ‘Topspin’ Tennis Bracelet Ahead of US Open

In our Piece of the Week, the designers reimagine the tennis bracelet with green enamel wrapped around a strand of “Desert Diamonds.”

Graphic for Episode 8 of the My Next Question podcast
PodcastsAug 20, 2026
Episode 8: Diamond Industry Update With David Bonaparte & Ronnie VanderLinden

The industry veterans join the podcast to discuss diamond marketing, the FTC Jewelry Guides, and lobbying for lower tariffs.

Gemstone AI app screenshots
TechnologyAug 20, 2026
A New AI-Powered Gemstone Identification App Is Here

Founder Vik Westermann said the app is a “starting point” to inspire people to work with appraisers and gem labs, not replace them.

Lianna Carter, Lauren Edwards, Thomas Koslowski, Erin Perry, Heran Wang
Events & AwardsAug 20, 2026
MJSA Education Foundation Names 5 Scholarship Winners

The five students were awarded a total of $10,000 through the nonprofit’s 2026 “Future of Jewelry Making” scholarship.

The Plumb Club 2026-2027 Executive Committee and Board Members
MajorsAug 20, 2026
Plumb Club Elects 2026-2027 Board

Steven Lerche is now beginning his term as the youngest member to become president of The Plumb Club’s elected executive committee.

Mike Alexander and Scott Murphy
MajorsAug 19, 2026
Mike Alexander To Succeed Scott Murphy as Jewelers Mutual CEO

Murphy will retire at the end of the year and Alexander, currently the company’s president, will take over at the start of 2027.

Spinelli Kilcollin Trade-In Bar Program Imagery
Policies & IssuesAug 19, 2026
Spinelli Kilcollin Embraces Dupes With Trade-In Program

The jeweler is encouraging customers who own lookalike rings to come into the store and trade them for credit towards an authentic piece.

Woman wearing Zales jewelry
MajorsAug 19, 2026
Zales Wants You to Wear Fine Jewelry Every Day

The new campaign, “You Are The Occasion,” discourages shoppers from saving their fine jewelry for special occasions only.

Former GJEPC Chairman and second-generation Indian diamantaire Vasant Mehta
SourcingAug 19, 2026
Vasant Mehta, a Dedicated Diamond Industry Leader, Dies at 81

Mehta led India’s GJEPC through the 2008 financial crisis and was respected worldwide for his wisdom, integrity, and knowledge.

Alfredo Colmenero-Martinez and Jarren Frazier
CrimeAug 18, 2026
2 California Men Arrested in Fatal Vehicle Smash Robbery

One is the driver who allegedly crashed a car into a Sacramento jewelry store in April, striking a 71-year-old employee who later died.

The Retail Smiths Principal Partner and National Jeweler columnist Peter Smith
ColumnistsAug 18, 2026
Peter Smith: The IKEA Effect and Bridal Branding

In a new column, Peter Smith posits that people actually enjoy putting together IKEA furniture, and the same is true for engagement rings.

Police car with lights on
CrimeAug 18, 2026
Thieves Snatch $1M in Jewelry From New Jersey Jeweler

9lakha Jewelers in Iselin, New Jersey, was the target of a smash-and-grab robbery on Aug. 8.

Ring Concierge x 818 Tequila Bridal Giveaway
Lab-GrownAug 18, 2026
Ring Concierge, Kendall Jenner’s Tequila Brand Collab on Giveaway

The jeweler has partnered with 818 Tequila to gift lab-grown diamond studs to a bride-to-be and their bridal party.

Louis Comfort Tiffany Poppy lampshade drawing
Events & AwardsAug 17, 2026
Exhibition on Louis Comfort Tiffany’s Studios to Open at The Met

The exhibition will feature more than 100 drawings of stained-glass lampshades, windows, and more, many created by women and émigrés.

Spinelli Kilcollin Inara Ring
CollectionsAug 17, 2026
Marquise Diamonds Dance in Spinelli Kilcollin’s ‘Wren’ Collection

Marquise-cut diamonds in drop charms are the center of the new collection, reflecting the movement of a dancer in modular styles.

×

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