Choose The Right Length When selecting a necklace or pendant, consider that the length will determine where it will lie on her chest. Pearl Strand Length 16 dans. Longueur de couloir: Just above collarbones. Emphasizes her neckline. 18 dans. Longueur de princesse: Hangs over collarbones. The most common length. 24 dans. Longueur d'opéra: Over blouse or dress. […]