The Roman Catholic Church has a precise system for categorising the religious worth of holy relics. A first-class relic is the mortal remains of a saint – for example, the head of Saint Catherine, entombed in Sienna. A second-class relic would be an object used or worn by the saint; it becomes holy through its intimate contact with the venerated being, such as the Turin Shroud. A third-class relic is an object brought into contact with a first or second-class relic; it can be separatedhellip;read more raquo;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;View Gallery (9 images)nbsp;