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Pink diamond Grand Condé returns to display in France

Published October 18, 2026 · 11:46 PM

Pink diamond Grand Condé returns to display in France

The nine-carat Grand Condé pink diamond returns to the Château de Chantilly, nearly a century after its famous theft involving a hollowed-out apple.

The legendary theft and the apple discovery

The Grand Condé diamond is famous not only for its color but for the improbable circumstances of its recovery following an overnight raid at the Château de Chantilly in October 1926. During this heist, thieves successfully pilfered the nine-carat gemstone, which they chose to hide inside a hollowed-out apple. This method of concealment proved to be their undoing.

The diamond was recovered just a few weeks after the theft occurred. According to the museum, a maid working at the hotel where the thieves were staying bit into the apple and discovered the hidden gem. While the story might seem like a piece of historical fiction, Mathieu Deldicque, the director of the Condé Museum, noted that the event was widely reported by newspapers during that era. The recovery ensured that the jewel remained in the hands of the Institut de France, which currently owns the Château de Chantilly and the Musée Condé collection.

The exhibition at the Condé Museum provides a rare opportunity to view the stone in its original context. Visitors can examine the diamond alongside previously unseen archival materials that detail both the gem's storied history and the mechanics of its 1926 disappearance. The display is scheduled to run until 3 January.

Historical lineage and the rarity of pink diamonds

Pink diamonds are among the most sought-after treasures in the gemological world due to their extreme scarcity in nature. The Grand Condé stands as a testament to this rarity, having survived the turbulence of the French Revolution to remain part of the royal lineage. While its exact origins remain a mystery, the diamond first appeared in an official record in 1740. This entry was part of an inventory for Louis Henri de Bourbon, the Prince of Condé, created after his death.

Following the Prince's era, the diamond passed through several prominent hands in the French monarchy. It became part of the collection belonging to Queen Marie-Amélie of Bourbon-Sicily, the consort of King Louis Philippe I. It was subsequently held by her son, Prince Henri of Orléans, the Duke of Aumale. Upon his death, the jewel was bequeathed to the Institut de France, which maintains the Château de Chantilly, located approximately 50km north of Paris.

The market value for such stones is immense. According to Sotheby's, the highest price ever paid for a pink diamond at auction was $71.2m in 2017. Because naturally occurring pink diamonds can command tens of millions of dollars, the Grand Condé represents a significant cultural and financial asset for the museum.

Modern security and academic verification

Displaying such a high-value artifact in the current climate presents significant logistical and security challenges for cultural institutions. The decision to exhibit the Grand Condé has raised questions regarding whether the museum is "tempting fate," particularly following a recent surge in thefts targeting European heritage sites. This includes a high-profile daylight robbery of jewelry from the Louvre in Paris within the last year.

To mitigate these risks, the museum has relied on advanced scientific methods rather than just traditional physical barriers. Mathieu Deldicque confirmed that extensive academic research has been conducted on the physical properties of the diamond. This rigorous study was designed to ensure the stone is uniquely identifiable through its specific characteristics.

While the museum declined to disclose the specific insurance valuation of the Grand Condé to CNN, the emphasis on academic analysis suggests a multi-layered approach to protection. By combining modern identification technology with the historical context provided by the new archival findings, the Condé Museum aims to present the diamond safely while honoring its complex legacy.

Frequently Asked Questions

How was the Grand Condé diamond recovered?

The diamond was recovered after being hidden inside a hollowed-out apple by thieves. A maid at the hotel where the thieves were staying discovered the gemstone when she took a bite of the fruit. This unusual event was widely documented by the press in 1926.

What is the historical significance of the diamond?

The Grand Condé is one of the few royal jewels to have survived the French Revolution. It has been part of several significant collections, including those of the Prince of Condé and Queen Marie-Amélie of Bourbon-Sicily, before being bequeathed to the Institut de France.

How rare are pink diamonds compared to other gems?

Pink diamonds are exceptionally rare in nature, which contributes to their massive market value. According to Sotheby's, a pink diamond reached a record auction price of $71.2m in 2017, reflecting the high demand and scarcity of these specific gemstones.