The Diamond Necklace Affair (Affaire du collier de la reine) was a scandal that took place in France between 1784 and 1785. It involved the fraudulent acquisition of a prominent diamond necklace intended for Queen Marie Antoinette, which significantly damaged her reputation and contributed to the public discontent that led to the French Revolution. Cardinal de Rohan, a high-ranking French clergyman, was central to the scandal. He was deceived into believing that he was reinstating himself in the Queen's favor by purchasing a valuable diamond necklace for her. Jeanne de la Motte, a con artist, played a key role by convincing Cardinal de Rohan that she was in close contact with Queen Marie Antoinette. Jeanne de la Motte used forged letters and arranged a fake meeting between the Cardinal and a woman posed as the Queen. Relying on this elaborate ruse, Cardinal de Rohan acquired a necklace from the jewelers Boehmer and Bassenge, believing the Queen would reimburse him. The necklace, containing 647 diamonds and valued at 1.6 million livres, was never paid for by Marie Antoinette; instead, it was broken down and the gems were sold separately in London to pay off Jeanne de la Motte’s debts. When the jewelers demanded payment, it became clear that the Queen had no knowledge of the transaction. The scandal erupted, leading to a trial in Paris's Parlement where the public's ire was directed towards the monarchy. Despite the eventual acquittal of Cardinal de Rohan in 1786, the affair severely tarnished the image of the royal family, particularly Marie Antoinette. Her perceived extravagance and alleged complicity in the scandal fueled growing discontent among the French populace. The Diamond Necklace Affair thus stands as a significant episode in the prelude to the French Revolution.