Lavalier

A lavalier or lavaliere or lavalliere is an item of jewelry consisting of a pendant, sometimes with one stone, suspended from a necklace.

The style was popularized by the Duchesse de la Vallière, a mistress of King Louis XIV of France. A lavalier can be recognized most for its drop (that usually consist of a stone and/or a chandelier type of drop) which is attached to the chain and not attached by a bail.