 This reliquary is decorated with a bas-relief depicting Jacques Dhuisseau handing the saint's arm to the bishop Guillaume Le Prestre de Lézonnet in the presence of Guillaume Le Gouverneur, the bishop of Saint-Malo, and various clerics.The arm is held in a crystal cylinder which is carried by models of various bishops.The chapel is also the site of the tomb and gisant of Monseigneur Nouvel de La Flèche, a Benedictine monk who served as bishop of Quimper from 1872 to 1887.