What is the theme of the diamond necklace?

The diamond necklace is a story about a woman who is forced to sell her prized Possession in order to pay off her husband's debts. The woman is unhappy with her life and feels that she is trapped by her circumstances. She decides to take matters into her own hands and sells the necklace in order to get the money she needs to escape her situation. The story is a tragedy, but it also has a moral lesson about the dangers of materialism and greed.