Lapis Judaicus
Also identified with the Graal and the Talismanic stone of inexhaustible feeding power. It is sometimes called Theolithos, and seems but another name for the Lapis Exilis (q.v.) It has been confounded with the Phoenix stone. Another legend clings to it: it is said to have fallen from the crown of Lucifer, as he was banished from heaven, and remains in the keeping of the angels of the air.