September 14th, 2026
A diamond that spent decades hidden from public view is finally stepping into the light. The legendary 137-carat "Florentine Diamond," once part of the Austrian Crown Jewels and believed lost for nearly a century, is now the star attraction of a remarkable new exhibition in Québec City.

“Hidden Treasure: A Century of Mystery,” which opened September 4th at the Musée national des beaux-arts du Québec (MNBAQ), presents 15 historic jewels connected to the Habsburg family, along with other artifacts that help tell the extraordinary story of how the treasure was spirited out of war-torn Europe and secretly preserved in Canada.
The exhibition’s centerpiece is the Florentine, a pale yellow diamond weighing 137.27 carats. Its unusual nine-sided double-rosette cut features 126 facets, including a second layer of facets on the underside that enhances the gem’s brilliance. Historical records once described its color as “wine mixed tenfold with water.” Its story stretches back centuries, beginning with the Medici dynasty in Florence before the diamond passed into Habsburg hands and became part of the Austrian Crown Jewels.
The diamond disappeared from public view following the collapse of the Austro-Hungarian Empire in 1918, but the gem was actually still very much in the Habsburg family.
Empress Zita, wife of Emperor Charles I, carried the diamond and other family jewels with her when she fled Europe during World War II. After arriving in North America in 1940, the family eventually settled in Québec, where the jewels were placed in a Canadian bank vault. Zita reportedly instructed her sons to keep the location of the Florentine secret for 100 years following Emperor Charles’ death in 1922.

For generations, only a handful of family members knew where the legendary gem was hidden. In 2025, Habsburg descendants finally revealed that the diamond had survived — safely tucked away in Canada.

Now visitors can see not only the Florentine, but also 14 additional Habsburg jewels. Among the highlights are an 18th-century insignia of the Order of the Golden Fleece and a jeweled pocketwatch from the trousseau of Marie Antoinette. The exhibition also includes the actual suitcase that protected the jewels for decades.

The exhibition is organized as a three-part journey, moving from the Habsburg dynasty and its years of exile to the family’s connection with Québec and, ultimately, the dramatic unveiling of the jewels themselves.

“The city of Québec offered my family safety, respect and hope during a time of great uncertainty,” said Empress Zita’s grandson Karl von Habsburg. “Showing these jewels at the Musée is an expression of profound gratitude to Québec and Canada.”
The exhibition is on view at the MNBAQ in Québec City, with reservations required.
Credits: Photos of Florentine Diamond, tourmaline Insignia of the Order of the Golden Fleece, yellow sapphire hat pin, diamond hat pin, emerald-and-diamond watch, Marie Antoinette's pocketwatch, and suitcase courtesy of Saint Joseph Trust, photo by MNBAQ, Louis Hébert.

“Hidden Treasure: A Century of Mystery,” which opened September 4th at the Musée national des beaux-arts du Québec (MNBAQ), presents 15 historic jewels connected to the Habsburg family, along with other artifacts that help tell the extraordinary story of how the treasure was spirited out of war-torn Europe and secretly preserved in Canada.
The exhibition’s centerpiece is the Florentine, a pale yellow diamond weighing 137.27 carats. Its unusual nine-sided double-rosette cut features 126 facets, including a second layer of facets on the underside that enhances the gem’s brilliance. Historical records once described its color as “wine mixed tenfold with water.” Its story stretches back centuries, beginning with the Medici dynasty in Florence before the diamond passed into Habsburg hands and became part of the Austrian Crown Jewels.
The diamond disappeared from public view following the collapse of the Austro-Hungarian Empire in 1918, but the gem was actually still very much in the Habsburg family.
Empress Zita, wife of Emperor Charles I, carried the diamond and other family jewels with her when she fled Europe during World War II. After arriving in North America in 1940, the family eventually settled in Québec, where the jewels were placed in a Canadian bank vault. Zita reportedly instructed her sons to keep the location of the Florentine secret for 100 years following Emperor Charles’ death in 1922.

For generations, only a handful of family members knew where the legendary gem was hidden. In 2025, Habsburg descendants finally revealed that the diamond had survived — safely tucked away in Canada.

Now visitors can see not only the Florentine, but also 14 additional Habsburg jewels. Among the highlights are an 18th-century insignia of the Order of the Golden Fleece and a jeweled pocketwatch from the trousseau of Marie Antoinette. The exhibition also includes the actual suitcase that protected the jewels for decades.

The exhibition is organized as a three-part journey, moving from the Habsburg dynasty and its years of exile to the family’s connection with Québec and, ultimately, the dramatic unveiling of the jewels themselves.

“The city of Québec offered my family safety, respect and hope during a time of great uncertainty,” said Empress Zita’s grandson Karl von Habsburg. “Showing these jewels at the Musée is an expression of profound gratitude to Québec and Canada.”
The exhibition is on view at the MNBAQ in Québec City, with reservations required.
Credits: Photos of Florentine Diamond, tourmaline Insignia of the Order of the Golden Fleece, yellow sapphire hat pin, diamond hat pin, emerald-and-diamond watch, Marie Antoinette's pocketwatch, and suitcase courtesy of Saint Joseph Trust, photo by MNBAQ, Louis Hébert.

















