A lavalier is a pendant with a dangling stone that hangs from a necklace Lavaliers were named for the infamous Duchess Louise de La Valliere (1644-1710), a French woman who was a mistress of the French king Louis XIV (and was involved in many intrigues at court)
A necklace with Greek letters attached to it Sorority members may receive their sorority's lavalier at the time of pledging or after initiation
A lavalier (a k a Lapel Mic) is a small microphone designed to be worn on clothing or to hang around one's neck They are used in applications where a large hand held microphone would either be too cumbersome or unsightly, or both They are typically made with an extreme low frequency rolloff to reduce rumble and noise from moving against clothing
A pendant with a fraternity's/sorority's Greek letters on it Legacy A potential pledge/new member whose grandparent, parent and/or sibling is an alumnus or active member of a fraternity/sorority