The 263-Carat Imperial Treasure: The Extraordinary Journey of the Napoleon Diamond Necklace
Few jewels in the world carry a history as sweeping, brilliant, and imperial as the Napoleon Diamond Necklace. Today it rests safely inside the Smithsonian Institution, but its story begins more than two centuries ago — in the courts of emperors, archduchesses, and some of Europe’s most powerful families.
A Gift Fit for an Empress
The necklace was commissioned in 1811 by Emperor Napoleon Bonaparte as a grand celebration of the birth of his long-awaited son, Napoleon II, with his second wife, Marie Louise of Austria. To mark the moment, Napoleon turned to the prestigious Parisian jewelers Etienne Nitôt and Sons, who created a masterpiece that would become one of the most legendary jewels of the Napoleonic era.
The resulting necklace was nothing short of extraordinary — a shimmering, intricate cascade of diamonds designed to embody power, triumph, and imperial prestige.
A Masterpiece of 234 Diamonds
According to the Smithsonian, the necklace is an engineering marvel of early 19th-century craftsmanship:
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234 diamonds total
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28 old mine-cut diamonds forming the main necklace
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A fringe of nine pendeloques (five pear-shaped diamonds alternating with four oval diamonds)
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10 briolettes, each suspended from settings containing 12 rose-cut diamonds
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An estimated total weight of 263 carats
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The largest diamond weighing approximately 10.4 carats
At the time, diamonds came exclusively from India and Brazil, making each gem rare and extremely valuable. The necklace’s stones were cut in the old mine style — an early precursor to the modern brilliant cut, known for dramatic flashes of colour and depth.
A Jewel on the Move: From France to Austria
When Napoleon fell in 1814, Empress Marie Louise returned to her Habsburg family in Vienna. She took all her jewellery with her — including the magnificent diamond necklace that had once symbolised the height of Napoleonic glory.
Upon her death in 1847, she passed the necklace to her sister-in-law, Archduchess Sophie of Austria, who made slight alterations by removing two diamonds to shorten the piece. Those two diamonds were crafted into earrings — though their location remains a mystery today.
The Habsburg Heirloom
In 1872, the necklace was inherited by Sophie’s son, Archduke Karl Ludwig of Austria. It remained a cherished Habsburg family treasure for more than seven decades.
Only in 1948, after the upheavals of two world wars, did the family finally part with it.
Karl Ludwig’s grandson, Prince Franz Joseph of Liechtenstein, sold the necklace to a French collector, beginning its journey into private hands.
The Harry Winston Chapter
In 1960, famed New York jeweler Harry Winston, Inc. acquired the necklace, recognising its extraordinary beauty and historical importance. Winston preserved the piece in its original case and soon found a buyer who shared his appreciation for world-class jewels.
That buyer was Marjorie Merriweather Post — the American heiress, philanthropist, and art collector whose treasures now form the foundation of the Hillwood Estate, Museum & Gardens.
A Gift to the Nation
In 1962, Marjorie Merriweather Post made a remarkable decision. She donated the Napoleon Diamond Necklace to the Smithsonian Institution, where it remains today as one of the most magnificent jewels in the National Gem Collection.
Visitors can now stand inches away from the diamonds once worn by an empress, touched by centuries of European history, revolution, and royal legacy.
A Jewel That Transcended Empires
From the courts of Napoleon to the Habsburg palaces…
From private collectors to one of America’s most iconic museums…
The Napoleon Diamond Necklace is more than a dazzling masterpiece.
It is a surviving witness to the rise and fall of empires, the shifting of dynasties, and the extraordinary journeys that great jewels often take across continents and centuries.