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

My Next Question, Episode 5: Amanda Gizzi, Michelle Graff, Frank Everett
PodcastsMay 20, 2026
Episode 5: Sotheby’s Frank Everett Puts the Auction Market in Perspective

Everett covers colored stones’ surging popularity, the mellow return of the “Mellon Blue,” and his “The Devil Wears Prada” doppelgänger.

Jewelry scam flyer and police officer handing flyer to elderly man
CrimeMay 20, 2026
NYPD Warns of Jewelry Swap Scams Targeting Seniors

The NYPD is warning elderly New Yorkers to keep their jewelry hidden when walking outside to avoid being a target.

New Adornment & Theory jewelry store in West Town, Chicago
IndependentsMay 20, 2026
Adornment & Theory’s New Store Feels Like Home

Designer Viviana Langhoff has realized her dream of owning a space for her Chicago jewelry store that looks and feels like her brand.

PG-05-SHOT-2-LUCIDA.033 1.png
Brought to you by
All Eyes on Gold Prices. Alternatives to Look For. And What to BEWARE of in Vegas

As gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.

Couture Show Logo
Events & AwardsMay 20, 2026
Here Is Couture’s 2026 Education Lineup

The sessions will run from Friday, May 29, to Sunday, May 31, with one being a live taping of an episode of Couture’s podcast.

Weekly QuizMay 14, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Morgan P. Richardson
Lab-GrownMay 20, 2026
Savannah Friedkin Jewelry Names New CEO

Former Stephanie Gottlieb Fine Jewelry executive Morgan P. Richardson is joining the lab-grown diamond jewelry brand.

Audemars Piguet x Swatch white Royal Pop watch
WatchesMay 19, 2026
Here’s the AP x Swatch Pocket Watch That Caused Pandemonium

The $400 pocket watch is a blend of Audemars Piguet’s iconic eight-sided Royal Oak and Swatch’s unserious Pop watches from the ‘80s.

1872x1052-NextGem-2026-National-Jeweler-Advertorial.jpg
Brought to you by
How Modern Training Is Becoming a Competitive Advantage for Jewelry Retailers

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

Chris Ploof Modern Electrum Collection Milgrain Rows and Diamonds Ring
CollectionsMay 19, 2026
Chris Ploof’s New Collection Makes an Ancient Medal Modern

With gold prices on the rise, the “Modern Electrum” collection uses an alternative, non-tarnishing metal alloy composed of gold and silver.

Ellen and Michael Fruchtman
IndependentsMay 19, 2026
Ellen and Michael Fruchtman Retire, Sell Marketing Agency

Fruchtman Marketing has new owners, Erin Moyer-Carballea and Manuel Carballea, and will relocate to Miami.

Peter Smith and National Jeweler contributor
ColumnistsMay 19, 2026
Peter Smith: The (Mostly) Immutable Sales Truths

In a column for the 2026 State of the Majors issue, Smith lists 10 time-tested principles about sales that still ring true.

Edahn Golan, Tenoris co-founder and National Jeweler contributor
ColumnistsMay 18, 2026
Edahn Golan: What a K-Shaped Economy Means for Fine Jewelry

In a column for the 2026 State of the Majors issue, Golan spells out how the growing economic divide in the U.S. is reshaping the market.

Foundrae Limitless Expansion of Joy and Hope Collection Campaign Imagery
CollectionsMay 18, 2026
Foundrae’s New Collection Taps Into Joy

The “Limitless Expansion of Joy and Hope” collection evokes summer through colored gemstones and motifs of butterflies and florals.

Inchiquin emerald
CollectionsMay 18, 2026
Hancocks London Acquires Historic ‘Inchiquin’ Emerald

The jewel, circa 1890, is from the late Victorian era and was owned by descendants of the last high king of Ireland.

JCK Industry Fund Logo
Events & AwardsMay 18, 2026
Here Are the 2026 JCK Industry Fund Grant Recipients

This is what the nine recipients plan to do with the funds.

MJSA Education Foundation and Jewelers of America
Events & AwardsMay 15, 2026
JA, MJSA To Sponsor Roundtable at TJS

The discussion, "Rebuilding the Jewelry Workforce," will take place on Saturday, May 16, in Troy, Michigan.

Three gold rings set with yellow- and brown-hued diamonds
SourcingMay 15, 2026
State of Diamonds: The Way Forward for Natural Diamonds

The jewelry industry is reassessing its positioning as Gen Z reshapes the retail landscape and lab grown continues to gain market share.

DeBeeers_Bridal_Display_Dune_1872x1052.jpg
Supplier BulletinMay 14, 2026
A Diamond Is Forever Continues Desert Diamonds – Bridal Reinvigorated

Sponsored by A Diamond Is Forever

Faceting Apprentice gem cutting school
SourcingMay 14, 2026
State of Colored Stones: The Spirit of Young American Gemstone Cutters

The next generation of lapidarists are entrepreneurial, engaged online, and see the craft as a means for artistic expression.

Ocean Dream diamond
AuctionsMay 14, 2026
‘Ocean Dream’ Makes Waves at Christie’s, Fetching $17M

It was the second auction appearance for the fancy vivid blue-green diamond, which sold for $7.8 million at Christie’s Geneva 12 years ago.

Stock image of police cars with their lights on
CrimeMay 14, 2026
Second Man Arrested in Florida Pawn Shop Shooting

Members of the U.S. Marshals Task Force took a 22-year-old man into custody. He was charged with tampering with evidence.

Stock image of crime scene with police cars and crime scene tape
CrimeMay 13, 2026
JSA’s 2025 Crime Report Shows ‘Concerning’ Rise in Violence

While the overall number of crimes was down, there were more incidences in which robbers pulled out guns, mace, or rammed cars into stores.

Jack Sutton Jewelers
IndependentsMay 13, 2026
New Orleans Jeweler Closing Canal Place Store

Jack Sutton Fine Jewelry is closing its store inside the downtown shopping center after 40 years in business.

Winston Red Diamond painting by Reena Ahluwalia
SourcingMay 13, 2026
Smithsonian Acquires ‘Winston Red’ Diamond Painting

Reena Ahluwalia’s painting of the rare red diamond is the first contemporary painting to join the National Gem Collection.

Anna Maccieri Rossi Ora Wood Sunrise Cuff, Marie Lichtenberg High Jewelry Bandana, Anna Maccieri Rossi Carpe Diem Pendant
TrendsMay 13, 2026
State of Design: Only the Innovative Will Survive

The price of gold has risen, affecting the number of pieces designers make, the materials they use, and how they position themselves.

The Retail Smiths founder and National Jeweler columnist Peter Smith
ColumnistsMay 12, 2026
It’s Official: We’re Getting ‘Brain Rot’ From Watching Short-Form Videos

Peter Smith gives tips on leading meetings, developing marketing, and making trade show appointments in the age of short attention spans.

Jessica McCormack Medallion Capsule Collection Campaign
CollectionsMay 12, 2026
Jessica McCormack Debuts Antique Coin-Inspired Medallions for Summer

The 11-piece “Medallions” capsule collection features five motifs: a crying eye, a heart on fire, a spiral, a flower, and a swallow.

×

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