What does Cameron find in his mother's box that Aunt Jeanne gives him?

Cameron decides to go through the box that belonged to his mother. He finds some half-used lipsticks, handwritten school papers, a concert ticket stub, scrunchies, old cassette tapes, and a small black drawstring bag. Inside the bag is jewelry: four bracelets, seven necklaces, two empty lockets, and one broken silver chain. Plus there is a class ring from Sowell Bay High School, class of 1989.