I gather you are saying I am speculating and that you also, are speculating.
About the similarity of some sample remnant in a quarry 2millenia later and another
column(s) in Rome.
But surely not as silly as it would be to entertain that with all the records available of the Roman
era that we would speculate that they were incapable of producing granite columns, that they only ever
acquired them from other places especially Egypt, and that those columns were not made by any known people
and all granite columns made prior to 1800 AD on the planet, were made entirely by an unknown civilization.
Wow... would that be... wild speculation or crazy?