'The Diamond Necklace' by Guy de Maupassant portrays the complexities and consequences of keeping up appearances in the 19th century. Mathilde is a young and beautiful woman, struggling with the ordinary circumstances of her life and marriage. When she is invited to a fancy ball with her husband, she borrows a diamond necklace from a friend. To her horror, she finds the necklace to be gone by the end of the night. The couple must now find a way to quickly replace the necklace, but the cost turns out to be terribly high. The story has inspired film adaptations, such as the silent film The Necklace (1909).