Auctions

Napoleon’s Diamond Brooch Blows Away Auction Estimates

AuctionsNov 14, 2025

Napoleon’s Diamond Brooch Blows Away Auction Estimates

A buyer paid $4.4 million for the piece, which Napoleon wore on his hat for special occasions and left behind when he fled Waterloo.

Napoleon Bonaparte diamond brooch
On Wednesday at Sotheby’s, a “distinguished international collector” paid $4.4 million for this diamond brooch that once belonged to Napoleon Bonaparte, 30 times more than its lowest pre-sale estimate. The brooch has a 13.04-carat oval-shaped diamond at its center surrounded by nearly 100 old mine-cut diamonds. (Photo courtesy of Sotheby’s)
Geneva—Never underestimate the power of a jewel with provenance.

On Wednesday in Geneva, Sotheby’s sold a diamond brooch that once belonged to Napoleon Bonaparte for $4.4 million at its “Royal & Noble Jewels” auction.

The pre-sale estimate on the piece was $150,000 to $250,000, meaning it went for 30 times its low estimate following a nearly 10-minute bidding battle among six bidders.

The winning bidder was a “distinguished international collector.”

According to information provided last month by Sotheby’s ahead of the auction, the brooch, which has a 13.04-carat oval-shaped diamond at its center surrounded by nearly 100 old mine-cut diamonds, was made for the French emperor around 1810, mostly likely to affix to his hat for special occasions.

It was among a number of jewels and other treasurers Napoleon brought along with him to the Battle of Waterloo in 1815, a consequential battle that led to the end of his rule.

While fleeing the battlefield, the carriage carrying the brooch and other treasures got stuck in the mud, and the defeated emperor was forced to leave it all behind.

Three days after the battle ended, one of the victors, Prussian King Friedrich Wilhelm III, was offered the brooch and other items from the carriage as battle trophies.

According to Sotheby’s, the pin remained with the House of Hohenzollern for centuries, passed down from King Friedrich Wilhelm III to the emperors of Germany.

For the past few years, it has been part of a private collection.

Princess Neslişah Sultan’s light pink diamond ring
Princess Neslişah Sultan received this light pink diamond ring right before her wedding in 1940 and kept it until her death in Turkey in 2012. A buyer paid $3.6 million for it at Sotheby’s. (Photo courtesy of Sotheby’s)


Wednesday marked Sotheby’s third consecutive Royal & Noble Jewels sale in which all lots were sold, a feat auction houses refer to as a “white-glove sale.” 

The auction total was $14.3 million, the highest since Sotheby’s started holding these standalone sales of royal jewelry in 2023.

The second highest-grossing lot of the sale was a 13.86-carat old mine-cut light pink diamond set into a mounting with old-mine and rose-cut diamonds (pictured above). 

The ring belonged to Princess Neslişah Sultan, who received it as a gift one week before her wedding in 1940. 

Expected to garner between $302,000 and $503,000, the ring also surpassed pre-sale estimates, selling for $3.6 million. 

Another highlight of Wednesday’s Royal & Noble Jewels sale was a natural pearl and diamond hair ornament with a history stretching back to 1796.

According to Sotheby’s, the natural pearls in the piece once were part of a collection that belonged to Prince Franz Xaver of Saxony and Poland. They were mounted in a tiara in 1796 for the wedding of one of Xaver’s five daughters, Kunigunde of Saxony, Marchesa di Montoro.



After Kunigunde’s death in 1828, the tiara was passed down to her youngest son, Filippo.

Around 1840, the tiara was dismantled and French jewelry house Fossin (now known as Chaumet) remade it into a Sévigné-style hair ornament, which is worn across the top of the head, extending from one ear to the other. 

A matching brooch was later made using natural pearls of the same provenance. 

Sotheby’s estimated the hair ornament and brooch, offered as one lot, would sell for $427,000 to $628,000. 

On Wednesday, a buyer paid $441,655 for the pieces. 

 Related stories will be right here … 

Sotheby’s held its Royal and Noble Jewels sale in conjunction with its High Jewelry sale, which generated $37 million.

The auction house said 94 percent of the lots on offer sold, and 75 percent topped their highest pre-sale estimate.

The top lot in the High Jewelry sale was a 4.5-carat oval mixed-cut fancy vivid blue diamond. A buyer paid $6 million for the stone.

4.5-carat oval mixed-cut fancy vivid blue diamond
This 4.5-carat oval mixed-cut fancy vivid blue diamond was the top lot in Sotheby’s High Jewelry sale. It sold for $6 million, within its estimated range. (Photo courtesy of Sotheby’s)


Combined, the two sales grossed $51.3 million, and followed Sotheby’s Important Watches sale, which took place Sunday in Geneva, all part of Luxury Week.

The watch auction generated $11.9 million and included the sale of an early Rolex Oyster watch that professional endurance swimmer Mercedes Gleitze wore when she attempted to swim across the English Channel in 1927.

Sotheby’s referred to the watch as the “Rolex that made Rolex.”

It sold for $1.7 million. 

Full results from all three sales can be found on the Sotheby’s website.

The Latest

Legacy emerald
SourcingAug 12, 2026
Eshed-Gemstar on the Painstaking Process of Cutting ‘The Legacy Emerald’

The gemstone supplier and manufacturer acquired the remarkable 104-gram Zambian emerald at Gemfields’ auction in May.

Surveillance image of jewelry thieves
CrimeAug 12, 2026
Elderly NYC Woman Targeted in Jewelry Swap Scheme

Two suspects offered to trade the woman a “winning” lottery ticket for her jewelry.

The Finsch Diamond Mine in South Africa, owned by Petra Diamonds Ltd.
SourcingAug 12, 2026
Another Diamond Mine Poised to Close

Finsch has been in business rescue since May, and owner Petra Diamonds said it sees no viable path forward for the mine.

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.

Stock image of gavel, handcuffs, and law books
CrimeAug 12, 2026
Jewelry Store Employee Gets 20 Years to Life in Choking Death of Boss

Michel Patrick DeSalles was sentenced after pleading guilty to the 2017 murder of Omid Gholian, who owned a jewelry store in Manhattan.

Weekly QuizAug 07, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Beth Miller Frederick Goldman
MajorsAug 12, 2026
Frederick Goldman Names New SVP of Sales

Longtime industry executive Beth Miller has taken on the role.

Jamie Cygielman
MajorsAug 11, 2026
Signet Jewelers Selects Mattel Exec to Lead Zales, Banter

Jamie Cygielman will take on the role on Aug. 24.

Brought-To-By-Article-Top-Image.jpg
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center Stage

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

Richard Moore
IndependentsAug 11, 2026
Polly’s Fine Jewelry Co-Owner Richard Moore Dies at 69

Moore, Polly’s husband, is remembered as a family man with an easygoing spirit and a love for sports and the outdoors.

National Jeweler columnists Duvall O’Steen and Jen Cullen Williams
ColumnistsAug 11, 2026
Creative Connecting: How to Sell Colored Gemstones to Gen Z

Duvall O’Steen and Jen Cullen Williams share the best ways to display, present, and explain colored gemstones to younger customers.

NAJA logo
Events & AwardsAug 11, 2026
NAJA Announces Lineup For 2026 Fall Virtual Conference

The mid-year conference for jewelry and watch appraisers will take place Sept. 5-6 on Zoom.

Honest Hands Workbench Ring Builder
TechnologyAug 10, 2026
Colorado Jeweler Launches Customization Tool He Built Himself

Honest Hands Ring Co. Founder Benjamin Bosworth shared his thoughts on jewelry technology and why AI can never replace the human element.

QVC Group logo
MajorsAug 10, 2026
QVC Exits Chapter 11 Bankruptcy, Names New Interim CEO

QVC Group President and CEO David Rawlinson is temporarily being replaced by a familiar face, former QVC CEO Mike George.

State Property Lorenz Station Bracelet
CollectionsAug 10, 2026
State Property Puts a Ripple in the ‘The Voyager’ Collection

The brand also added two one-of-a-kind brown diamond pieces to the “Sanssouci” series of its “Gardens” collection.

Ostbye receiving Vendor of the Year trophy at 2026 IJO show
MajorsAug 10, 2026
And IJO’s 2026 Vendor of the Year Is …

Ostbye took home top vendor honors at the Independent Jewelers Organization’s show, held last month in Kentucky.

1872-x-1052-July-ad (2).png
Supplier BulletinAug 07, 2026
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying Events

Sponsored by Stratus Estate Buyers

Blue Nile President Pamela Cloud
MajorsAug 07, 2026
Retail Veteran Pam Cloud Appointed President of Blue Nile

Cloud, who will officially join Blue Nile on Monday, spent 26 years at Tiffany & Co. and founded jewelry brand Roseate.

Paulo Garcia
MajorsAug 07, 2026
Pandora Appoints Paulo Garcia as New CFO

Garcia will take over from the company’s current CFO, Anders Boyer, who is retiring at the end of November.

Etsy office Dumbo Brooklyn
MajorsAug 07, 2026
Etsy to Lay Off 12% of Workforce

Etsy CEO Kruti Patel Goyal explained why the company is letting go more than 200 employees as its performance improves.

Syna Star Gazer Pendant
TrendsAug 07, 2026
Look Ahead with Syna’s Binoculars Pendant

The “Star Gazer” pendant, our Piece of the Week, is Syna’s tribute to curiosity and the discovery of something new.

An interior shot of the Musee Lalique in Wingen-sur-Moder, France
CrimeAug 06, 2026
Lalique Museum to Remain Closed Following $5M Heist

Museum officials are looking to the public to help cover the “exceptional” costs involved in recovering from the July 5 smash-and-grab.

Claire’s new piercing experience
MajorsAug 06, 2026
Claire’s Revamps Piercing Services for Second Time in Three Years

The overhaul includes enhanced employee safety training and trendy earring styles, including lab-grown diamond studs.

Brilliant Earth Jane Goodall collection rings
FinancialsAug 06, 2026
Brilliant Earth’s Q2 Sales Up 6%, Driven by High-Income Shoppers

The retailer said it had its biggest Mother’s Day ever, with strong demand for higher-priced jewelry.

Handwork: Handcrafted Objects that Made America Book Cover
TrendsAug 06, 2026
New Book on Handcrafted American Objects Highlights Jewelry

“Handwork: Handcrafted Objects that Made America” features historic and contemporary works, including a Diné squash blossom necklace.

Ani Khachian
MajorsAug 06, 2026
AJA East Coast Names Ani Khachian as First Female President-Elect

The Armenian Jewelers Association’s East Coast chapter has also elected its 2026–2027 board of directors.

JCPenney storefront
MajorsAug 05, 2026
Private Equity Firm Wants to Buy 100+ JCPenney Stores

Onyx Partners has submitted a second offer to buy the department stores after its first offer fell through last year.

The Roaring Jewel Martini
IndependentsAug 05, 2026
Atlanta Jeweler Introduces $10K Martini

Solomon Brothers Jewelers has partnered with local cocktail bar Roaring Social on a new martini garnished with a tennis necklace.

×

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