The necklace quiz

Madame Loizel's husband gives her an invitation to the ball. What part of the story is this?

Loizel sees her friend in public she tells her the necklace was fake. What part of the story?

Madame Loizel decides to buy a new necklace FOR 40,000 FRANCS!! What part of the story is this?

Madame Loizel and her husband work for 10 yrs to pay the necklace off. What part of the story?

Madame Loizel loses the necklace, what part of the story is this?

What is the theme of this story