Exodus 33:4-6

4The Israelites heard God's strong words. His message made them very upset. They stopped wearing their jewels, to show that they were sad.

5The Lord had said to Moses, ‘Tell the Israelites, “You are proud people who refuse to obey me. If I go with you, even for a moment, I might destroy you. Now remove your jewels. Then I will decide what I should do with you.” ’

6So the Israelites no longer wore their jewels after they left Sinai mountain.