A sihedron medallion is an artifact from the ancient empire of Thassilon. It is generally found in the form of a silver disk and worn around the neck on a leather cord. The medallions come in many sizes, tailored to the creatures to whom they belong. The disk is inscribed with the sihedron rune, a seven-pointed star which symbolized the seven virtues of rule of early Thassilon. With the decline of the empire the rune became more closely associated with the seven vices and with rune magic in general.