 A theory of the relic being separated from the reliquary was due to its poor craftsmanship or creation by an immature student and was not worthy to house the true cross relic.The relic was taken out and worn on a necklace by Pope Innocent IV.Pope Innocent IV presented the relic to his new basilica, San Salvatore di Lavagna, in 1245 (where it still resides) and the box became an heirloom of the Fieschi Family.