While the provenance of such new relics is easy to establish--a photo would do--that of ancientrelics is more problematic, especially of ones attributed to Jesus.
Dubbed Mount Sharp, it appears to be an unusual layer-cake of clay and other sedimentary deposits that may be relics of ancient water flows and organic chemistry.
The Jewry Wall Museum, only a short distance from the cathedral and the Greyfriars parking lot, houses medieval relics and ancient Roman ruins on its grounds.