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The 1786 Diamond Necklace judgment publicises court fraud around Marie-Antoinette while treating her role as allegation, not proven theft

Versailles’s necklace key-date page and Britannica record the Parlement judgment season of 1786 that exposed Jeanne de La Motte’s fraud using the queen’s forged reputation. In the causal graph this event strengthens Institutional Corruption, a driver that strengthens Political corruption index — a worsening welfare path.

Sources: [1][2]

Read the full account

Versailles’s necklace key-date page and Britannica record the Parlement judgment season of 1786 that exposed Jeanne de La Motte’s fraud using the queen’s forged reputation. Cardinal de Rohan and the jewelers share the scam file. She is not stored here as the thief.

Context

The 1785 allegation row is neighbouring.

Marie-Antoinette’s documented role is bounded by other offices and collaborators named in the sources below.

Parlement politics, Rohan’s humiliation, and pamphlet amplification; allegation remains allegation.

Why it matters

A public fraud judgment that weaponised the queen’s name is an institutional-corruption and trust path.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Marie-Antoinette

    Person

    Direct responsibility

    responsibility level 0.4 · verified

    Named as the forged persona in a fraud judgment. La Motte, Rohan, and jewelers are the fraud actors.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactThe 1786 Diamond Necklace judgment publicises court fraud around Marie-Antoinette while treating her role as allegation, not proven theft
    2. strengthensDriverInstitutional Corruption
    3. strengthensIndicators (3)Political corruption index
    Worsening path

    impact weight 0.45 · Effect from 31 May 1786 · verified

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Château de Versailles — Affair of the diamond necklace, 1784–1785Établissement public du château, du musée et du domaine national de Versailles · High credibility · verified
  2. 2.Britannica — Marie-AntoinetteEncyclopaedia Britannica · High credibility · verified
What the sources establish

Versailles necklace page and Britannica independently describe the Affair’s 1785–1786 fraud and judgment without proving her theft.

Established: 1786 judgment publicity in the palace/encyclopedia file. Not established: that she ordered or received the necklace.

Marie-Antoinette did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. Never store her as convicted necklace thief. Never cake.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorMarie-Antoinette
  2. contributed toFactThe 1786 Diamond Necklace judgment publicises court fraud around Marie-Antoinette while treating her role as allegation, not proven theft
  3. strengthensDriverInstitutional Corruption
  4. strengthensIndicatorPolitical corruption index

Cite this page

Factrail. (2026). The 1786 Diamond Necklace judgment publicises court fraud around Marie-Antoinette while treating her role as allegation, not proven theft. Factrail. https://factrail.ai/facts/ma-necklace-judgment-1786

https://factrail.ai/facts/ma-necklace-judgment-1786

Accessed 15 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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