The affair of the diamond necklace (1784-86) was a scandal that centered around Queen Marie Antoinette of France (l. 1755-1793). Although the queen was innocent of any involvement in a plot to steal a luxurious diamond necklace, the scandal succeeded in ruining her already damaged reputation, causing increased disillusionment in the monarchy in the years preceding the French Revolution (1789-1799).
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/1970/affair-of-the-diamond-necklace/.