What kind of jewelry does Juliet drop to Romeo when he climbs down her

balcony?

Romeo + Juliet (1996)

She drops down her silver necklace with a cross on it.

This takes place at the very end of the infamous balcony scene. The two have exchanged promises of love and have agreed to be married. After Romeo tells her the hour to send someone for news, he climbs the balcony one last time. She throws down her necklace as a promise of her love and faith in him.