A dazzling Napoleon diamond brooch once owned by Napoleon I will be auctioned off during Sotheby’s Royal and Noble Jewels sale in Geneva this week. The historic Napoleon diamond brooch is expected to fetch between 120,000 and 200,000 Swiss francs (approximately $149,000 and $248,000 at the current exchange rate), though some experts believe it could sell for over $600,000 due to renewed global interest in 19th-century French jewelry tied to the Bonaparte family. Collectors prize the Napoleon diamond brooch for its historical provenance, exquisite craftsmanship, and the enduring allure of Napoleonic treasures, making it one of the most anticipated pieces in Sotheby’s upcoming auction.
Thieves recently stole several of the French crown jewels worn by the two imperial families of Napoleon and his nephew, Napoleon II, from the Louvre in Paris. As such, historic royal pieces, like this Napoleon diamond brooch, have become even more coveted among collectors and enthusiasts worldwide. The theft has intensified demand for jewels with documented provenance, rarity, and connections to iconic figures, making items like this brooch particularly significant in the luxury jewelry market.
“The recent Louvre heist has reignited global fascination with jewels linked to Napoleon, and his Napoleon diamond brooch comes to auction at a pivotal moment,” Tobias Kormind, managing director of jeweler 77 Diamonds, told Robb Report in an email. “With several historic pieces now missing, collectors are increasingly focused on jewels with secure provenance and verified ownership; factors I believe will heighten interest, drive bidding, and command higher prices, particularly for rare Napoleonic treasures like this exceptional brooch.”
Created by a Parisian atelier around 1810, the circular brooch features a huge diamond of 13.04 carats surrounded by 100 old mine- and mazarin-cut stones. This Napoleon diamond brooch is one of the personal belongings Napoleon left behind at the Battle of Waterloo on June 18, 1815, according to Sotheby’s. After ruling most of Europe for two decades, the French emperor lost this battle to the combined forces of the British and Prussian army. He was forced to escape on horseback, leaving behind his prized possessions in the carriage. Ironically, the thieves from the recent Louvre heist also left behind a treasure as they fled from the museum. Empress Eugénie’s diamond-encrusted imperial crown was recovered on the day of the robbery outside the Louvre, highlighting the historical and collectible significance of this iconic brooch.
The brooch was given to Prussian King Friedrich Wilhelm III three days after the Battle of Waterloo. “I herewith humbly present, in the name of the 15th Regiment and particularly the Fusilier Battalion under my command, a brilliant ornament that we captured in pursuit during the glorious battle,” Lieutenant von Pless said at the time. This historic Napoleon diamond brooch was recognized not only for its extraordinary size and craftsmanship but also for its symbolic value, representing both Napoleonic legacy and military triumph. “This ornament is so rare that it should rightfully belong only to the crown of Prussia and our revered king,” he added, cementing its historical significance.
The brooch remained in the hands of the Hohenzollern dynasty for over two centuries, moving from Emperor Wilhelm II to his son Crown Prince Wilhelm and his grandson Prince Louis Ferdinand. This is the first time it will be offered for auction, creating an extraordinary opportunity for collectors and enthusiasts to acquire a piece of European history that has remained largely unseen for generations.
Kormind believes the Napoleon diamond brooch will hammer down for at least 500,000 francs ($620,000), more than double Sotheby’s high estimate. “The jewel offers a rare chance to own a living fragment of Europe’s past that was part of one of history’s most dramatic turning points,” he adds, noting that the provenance, rarity, and historical significance of this iconic Napoleonic piece make it especially coveted among high-end collectors worldwide.
Sotheby’s Royal & Noble Jewels auction will take place live in Geneva on Wednesday, November 12. You can register and bid online ahead of the sale, ensuring international collectors can participate. The auction provides a unique moment to witness history being offered on the market, where legendary items like this Napoleon diamond brooch connect the past with present-day connoisseurs, investors, and jewelry enthusiasts seeking rare Napoleonic treasures.
