The twist at the end of The Necklace is a shocking revelation. After Matilda and her husband spend ten gruelling years repaying a debt of thirty-six thousand francs to replace the lost diamond necklace, she meets Mme Forestier and proudly tells her the truth. Mme Forestier is stunned and replies that the original necklace was fake — made of false diamonds worth no more than five hundred francs. The Loisels had sacrificed ten years of their lives in poverty for something that was almost worthless.
Source: The Necklace, Chapter 7
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