Historians now think they have recovered the holy grail, great news for Christian believers, as there always have been little physical remains of the late Jesus of Nazareth.
The goblet is historically recognized and is also documented in different records.
I would assume it would be a tremendously interesting artefact to perform ritual magick with, because it is both a symbolic and actual vessel, that has gathered a lot of power over the years.
One could only imagine what alchemical work one could achieve with such a direct physical and metaphysical link to the egregore of christianity.
Now that would be an interesting eucharist to lo and behold.