It is based on the Affair of the Diamond Necklace, a scandal that occurred in France in the 1780s.The novel tells the story of Jeanne de Valois-Saint-Remy, a woman who was involved in a plot to steal a diamond necklace that was intended for Marie Antoinette, the Queen of France. Jeanne, who was a descendant of the royal Valois family, was in financial difficulty and saw the necklace as a way to gain money and prestige. She conspired with several others, including a Cardinal and a jeweler, to obtain the necklace, but their plan was discovered and they were arrested and put on trial.The novel follows Jeanne's story, from her early life as a poor girl in the French countryside to her rise as a prominent figure in the French court, and her eventual downfall as a result of her involvement in the diamond necklace affair. The novel also explores the political and social climate of the time, as well as the role of women in French society."The Queen's Necklace" is known for its vivid portrayal of the characters and events of the time, as well as its depiction of the glittering and decadent world of the French court. It is a classic of historical fiction and remains popular to this day.