Bajoran betrothal bracelet

From Memory Alpha, the free Star Trek reference.

A Bajoran betrothal bracelet is an item which a Bajoran gives to a partner when they are to be married.

In 2371, while affected by Lwaxana Troi's telepathic projections, Vedek Bareil Antos tried to give Jadzia Dax a betrothal bracelet. She later grabbed it from him and presented it to Benjamin Sisko. (DS9: "Fascination")