The guy that told me this...

"They are used in lodges to demonstrate the difference between a rough aslar and a smooth ashlar as you progress through masonary these
stones figuratively get smoother ie like the stones you've had rough edges rubbed off. John The Baptist is the patron saint as is St John see what
day is there saints day, its a clue to the origines of old freemasonary know as the ancients. It is not juju, these will be a lodge which meet under
the stars and perhaps forgot the location of the lodge equipment. If they ever make it back and don't find the emblems of mortality that would
really freak them out. I would be send then to grand lodge or at least notify them you have them."

..Is a master mason provincial deacon and a member of grand college. He is also a Knight Templar priest in the order of Melkesideck and an active pz
in grand chapter as well as a knight of the blue and of the east and west.
Although his ranking means little to me.. he seemed to be sure of the origins of the stones.. as if he had seen the same kind of thing before.