Levi: along diamond chain with diamonds carefully crafted into patterns. The chain held a large oval pearl on the bottom.

Eren:
A diamond stud with a dangling silver rim. The rim had diamonds encrusted. They had diamonds inside of them.

Armin:
Large silver rose studs. Each level of silver pedals had diamonds encrusted on them. In the center they had a large diamond.

Conny:
A diamond stud with a small silver chain. The chain connected a large silver rim. Inside that rim was a large oval diamond