Marie Antoinette's Diamonds: The Scandal and the Style
Marie Antoinette's diamonds tell two stories. The first is a scandal: a 2,800-carat necklace she never ordered and never wanted, used in a fraud that destroyed her reputation. The second is a survival: personal jewels smuggled to Vienna in a wooden chest in 1791, passed through the Bourbon-Parma family for over 200 years, and sold at Sotheby's in 2018 for CHF 43.1 million — thirty times the estimate. Both stories illuminate why provenance transforms antique jewellery from beautiful objects into historical artefacts.
What Was the Affair of the Diamond Necklace?
In 1785, a necklace containing 647 brilliant-cut diamonds weighing nearly 2,800 carats became the centrepiece of a fraud that toppled a queen's reputation. The necklace had been created by the Crown jewellers Boehmer and Bassenge for Louis XV's mistress, Madame du Barry, but remained unsold at an asking price reduced to 1.6 million livres.
The scheme was orchestrated by Jeanne de la Motte, who deceived Cardinal de Rohan into believing Marie Antoinette wished to acquire the necklace secretly. La Motte presented forged documents signed "Marie Antoinette of France" — a signature any informed courtier would have recognised as false, since queens of France signed with their first name only. Rohan received the necklace on 1 February 1785 and passed it to La Motte, who had it broken up and the diamonds sold separately.
The Aftermath
Rohan was arrested on 15 August 1785 in the Hall of Mirrors at Versailles, before mass, in front of the full court. The Parlement de Paris declared him innocent on 31 May 1786 — a verdict that publicly humiliated the Queen by implying she was the sort of person who might conduct secret jewellery transactions through intermediaries. La Motte was convicted and branded, but escaped to London where she published memoirs blackening the Queen's character further.
Although Marie Antoinette was entirely innocent, the scandal permanently destroyed her public standing. The numerous publications it generated fuelled anti-royalist sentiment at precisely the moment France was sliding toward revolution. Napoleon himself later declared: "The Queen's death must be dated from the diamond necklace trial."
What Happened to Marie Antoinette's Personal Jewellery?
In March 1791, as the royal family prepared to flee the Tuileries, Marie Antoinette placed her diamonds, rubies, and pearls in a wooden chest. The chest was sent to Brussels in the care of Count Mercy d'Argenteau, then forwarded to Vienna under the Austrian Emperor's safekeeping.
Marie Antoinette was executed on 16 October 1793. Her husband Louis XVI had been executed nine months earlier, on 21 January 1793. Their surviving daughter, Marie-Thérèse, was released from the Temple prison in December 1795 and reclaimed the jewels upon arriving in Vienna in January 1796. The collection passed through the Bourbon-Parma family for approximately 200 years, establishing a provenance chain documented by Sotheby's, the GIA, and contemporary accounts including Madame Campan's memoirs and a 1794 Brussels inventory ordered by Emperor Francis II.
What Sold at the 2018 Sotheby's Auction?
On 14 November 2018, Sotheby's Geneva offered ten pieces traced to Marie Antoinette as part of the "Royal Jewels from the Bourbon-Parma Family" sale. The results shattered every estimate.
| Lot | Description | Estimate (CHF) | Result (CHF) |
|---|---|---|---|
| 100 | Natural pearl and diamond pendant | 995,000–1,990,000 | 36,427,000 |
| — | Diamond brooch | — | 1,812,500 |
| — | Three-strand natural pearl necklace (119 pearls, redesigned by Nitot for Empress Marie-Louise, 1805) | — | 2,159,000 |
| — | Total for ten Marie Antoinette pieces | 1,600,000–2,900,000 | 43,100,000 |
The pearl pendant — featuring a drop-shaped natural pearl measuring 15.90 × 18.35 × 25.85 mm (probably Persian Gulf), suspended below a diamond-set bow with an oval-cut diamond of approximately 5 carats — set a world auction record for a natural pearl. It sold for roughly thirty-six times its high estimate.
The results demonstrated what collectors already know: provenance multiplies value. The materials in these pieces were precious, but it was the documented connection to Marie Antoinette — verified through two centuries of family records, a 1794 Brussels inventory, and contemporary memoirs — that produced the extraordinary prices. The GIA noted that these results offer a case study in how documented provenance transforms market value: the pearl pendant's materials alone would have fetched a fraction of its $36 million hammer price. Browse our pearl rings to see natural pearls in antique settings.
What Type of Diamonds Did Marie Antoinette Wear?
The diamonds of Marie Antoinette's era were old mine cuts — hand-shaped by bruters grinding two diamonds together, producing 58-facet stones with distinctive proportions: smaller tables, larger culets, and higher crowns than modern brilliants. Each stone was unique, shaped to maximise fire (coloured flashes) under candlelight rather than the white brilliance prized by modern grading.
These cutting techniques survived into the Victorian period, making old mine cut diamonds the most common antique diamond type encountered by collectors today. A Georgian or early Victorian diamond ring set with old mine cuts shares DNA with the stones that adorned the French court — the same hand-cutting traditions, the same emphasis on warmth and character over clinical precision.
For buyers, this connection matters. Every antique diamond ring set with old mine cuts represents a direct link to the cutting traditions of Marie Antoinette's era. The stones will never match a modern brilliant for raw sparkle, but they possess a warmth, depth, and individuality that machine-cut diamonds cannot replicate — the same qualities that made 18th-century French diamonds the most coveted in Europe. Browse our diamond rings and antique rings to see these stones in wearable form. The Georgian period produced some of the finest surviving examples. Explore our complete buyer's guide for more.
Frequently Asked Questions
Was Marie Antoinette involved in the Diamond Necklace Affair?
No. Marie Antoinette was entirely innocent. The scheme was orchestrated by Jeanne de la Motte, who forged documents and deceived Cardinal de Rohan into purchasing the necklace. The Château de Versailles confirms the Queen "had no knowledge of either the jewel or Rohan's purchase." Despite her innocence, the scandal destroyed her reputation.
How many diamonds were in the necklace?
The necklace contained 647 brilliant-cut diamonds weighing nearly 2,800 carats, created by Crown jewellers Boehmer and Bassenge. The asking price had been reduced to 1.6 million livres. The necklace was broken up and the diamonds sold separately by the conspirators after the fraud.
What happened to Marie Antoinette's personal jewels?
In March 1791, Marie Antoinette packed her diamonds, rubies, and pearls into a wooden chest that was smuggled to Vienna via Brussels. Her daughter Marie-Thérèse reclaimed them in 1796. The jewels passed through the Bourbon-Parma family for approximately 200 years before being auctioned at Sotheby's Geneva in November 2018.
How much did Marie Antoinette's pearl pendant sell for?
The natural pearl and diamond pendant (Lot 100) sold for CHF 36,427,000 (approximately US$36 million) at Sotheby's Geneva on 14 November 2018, against a pre-sale estimate of CHF 995,000–1,990,000. It set a world auction record for a natural pearl. Ten Marie Antoinette pieces in total realised CHF 43.1 million.
What type of diamonds did Marie Antoinette wear?
Marie Antoinette's diamonds were old mine cuts — hand-shaped stones with 58 facets, smaller tables, and larger culets than modern brilliants. These were cut to maximise fire under candlelight. The same cutting techniques continued into the Victorian period, making old mine cuts the most common antique diamond type in the collector market today.
Why did Marie Antoinette's jewels sell for so much more than estimated?
The extraordinary prices — roughly thirty times the estimates — reflected the power of provenance. The materials were valuable, but the documented chain of ownership stretching from Marie Antoinette through the Bourbon-Parma family for over 200 years transformed these pieces from fine antique jewellery into historical artefacts with unique significance.
Related Reading
- Old Mine Cut vs Old European Cut vs Rose Cut — the cutting styles from Marie Antoinette's era
- Georgian Rings (1714–1837): Candlelight & Craft — the era of 18th-century French jewellery
- The Hope Diamond: A Jewel of Mystery and Majesty — another jewel with a dramatic French history
- Explore our complete buyer's guide — pillar page