Do you know how old it is?
I don't think they're going to allow some scientists to take a chunk to analyze.....
The Kaaba dates from very ancient times. Some (Peter Tompkins) think it was originally a geodetic marker, a Navel. Others exist, Delphi is also a possible Navel.
The folks in Arabia have always considered the Kaaba sacred but apparently forgot why.
The second is the Dome of the rock in Jerusalem. Abraham was there ....1800 BC.