Peryite is one of the group of seventeen strongest Daedra known as Daedric Princes. Among mortals, he is considered the Lord of Pestilence; among the daedra, he is charged with ordering the lower planes of Oblivion. Despite his dragon-like appearance, he is considered one of the weakest of the Daedric Princes.
This amulet shows Peryite as a dragon framed by rats, another form he is known to take.