The Bajoran earring is a piece of ornate jewelry worn on the right ear, a public sign of a Bajoran's spiritual devotion.
Many Bajorans wear the earring as a mark of their faith in the Prophets, and it is often worn by Bajorans in uniform. Kira Nerys wore hers throughout her service on Deep Space Nine, as did the Bajoran clergy.
In 2368 Ensign Ro Laren insisted on wearing her earring aboard the Enterprise-D despite Starfleet uniform rules. After objecting, Riker allowed it, and her choice became an emblem of her independence.