At one of Gatsby’s parties, there were “girls in yellow” to show that they had lots of money (Fitzgerald 43). This is a sign of materialism. Yellow is simlilar to gold which is expensive.
Daisy’s voice is characterized as “full of money” to show that she has a lot of money (Fitzgerald 120). The most important thing to Daisy is money.
Materialism is shown when Gatsby says “I want you and Daisy to come over to my house.” to show that Gatsby cares about his money (Fitzgerald 89). Gatsby wants to show Daisy his house to show how much he has.