lavaliere

[ lav-uh-leer, lah-vuh- ]
/ ˌlæv əˈlɪər, ˌlɑ və- /

noun

an ornamental pendant, usually jeweled, worn on a chain around the neck.
Also lav·a·lier, la·val·lière [French la-va-lyer] /French la vaˈlyɛr/.

Origin of lavaliere

First recorded in 1915–20; after the Duchesse de La Vallière (1644–1710), one of the mistresses of Louis XIV