A Napoleonic brooch will soon go up for auction in Geneva. The catalog features a brooch adorned with nearly 100 ancient diamonds hand-cut, dating back to around 1810 and linked to the events of Waterloo.
The sale will take place on November 12, 2025 at Sotheby’s Geneva. According to the catalog, the brooch was taken from the abandoned luggage after the battle and presented three days later to King Friedrich Wilhelm III as a trophy. This provenance, passed down by the House of Hohenzollern, enhances the historical significance of the lot.
At Geneva, Sotheby’s auction: the context of the Napoleonic brooch
The session brings together several pieces of great provenance. Indeed, the catalog includes ornaments ranging from Napoleonic brooches to period tiaras. In particular, the sale contrasts court objects and jewelry with documented histories. Therefore, the interest is not only aesthetic but also historical and collectible.
Technical details of the Waterloo-Prussia brooch and antique-cut diamonds
The brooch — often described as a Waterloo Prussia brooch — is embellished with nearly 100 old mine-cut diamonds. It was probably created around 1810 to be attached to Napoleon’s bicorne on official occasions. Moreover, the presence of the antique cut gives the gem a different chromatic charm compared to modern cuts.
The auction house indicates an estimate exceeding 200,000 CHF (about 250,000 USD). For evaluations of this type, specialists verify provenance documents, conditions, and comparisons with recent sales. Consequently, the estimate reflects both the rarity and the historical value of the piece.
The Cunegonde of Saxony tiara and the Ottoman pink diamond ring
Alongside the brooch, the catalog lists other lots of royal interest. The Cunegonde of Saxony tiara, reworked around 1840 as a hair ornament and convertible, is estimated between 340,000 and 500,000 CHF. Additionally, a rare sévéigné with pearls and diamonds is indicated as a museum-quality piece.
An Ottoman pink diamond ring, with documented ties to the Ottoman court, is valued between 240,000 and 400,000 CHF. These lots expand the scope of the sale, showing a strong thematic cohesion around royal Geneva jewelry.
Provenance and historical background of the Napoleonic brooch
According to the catalog notes, the brooch passed to the House of Hohenzollern after being collected as a trophy. Furthermore, the piece remained within the royal collection until recent times. This chain of ownership is crucial for the historical and commercial value of the object.
Lastly, recent sales reinforce the interest in Napoleonic items: in June 2025, a group of over 100 Napoleonic lots totaled about 8.3 million euros at Sotheby’s Paris. Additionally, last year a sword commissioned by Napoleon was sold by Giquello for 4.6 million euros. Therefore, the market shows a solid trend for works with strong historical provenance.
What it means for collectors and institutions
For collectors, these pieces offer a rare combination of beauty and history. Institutions, on the other hand, assess the cultural relevance and the possibility of public display. Moreover, international buyers observe the estimates and documentation to plan strategic bids.
From a practical standpoint, experts and catalogers conduct gemological analyses and archival research to confirm authenticity and provenance. In addition, auction commissions and the buyer’s premium influence the final price that buyers must consider.
Sévigné pearls and diamonds: between tradition and collecting
References to the sévéigné technique and the use of pearls and diamonds show how certain stylistic trends persist in the market. These pieces, often of museum quality, attract the interest of both museums and institutional collectors. Furthermore, the reinterpretation of historical motifs makes such objects appealing for both exhibitions and investments.
Why to watch this auction
The auction on November 12, 2025 in Geneva highlights the combination of history, art, and market. The Napoleonic brooch is, for importance and provenance, one of the emblematic pieces of the catalog. Additionally, the presence of the Cunegonde of Saxony tiara and the Ottoman pink diamond ring enriches the offering, providing insights for both historical research and collecting strategies.
For more details and sales conditions, you can consult the sections of Econique dedicated to auctions and internal insights.
As expert in digital marketing, Amelia began working in the fintech sector in 2014 after writing her thesis on Bitcoin technology. Previously author for several international crypto-related magazines and CMO at Eidoo. She is now the co-founder and editor-in-chief of The Cryptonomist and Econique.
She is also a marketing teacher at Digital Coach in Milan and she published a book about NFTs for the Italian publishing house Mondadori, while she is also helping artists and company to entering in the sector. As advisor, Amelia is also involved in metaverse-related project such as The Nemesis and OVER.
