The Black Stone of the Kaaba apparently is not a meteorite, although listed as a probable example in the Prior-Hey Catalogue of Meteorites. Diffusion banding and other physical attributes suggest that it is an agate.Robert S. DietzDepartment of GeologyJohn McHone...
Scientists point out that the stone might be a meteorite, al-Akiti said, and that the latter theory may have originated after it fell from the sky. People kiss the stone today because Omar, the second Muslim caliph, told followers that he had seen the Prophet Mohammed do so himself, said...