Like stone of Ebenezer, the sanctity of black stone is not intrinsic.
It is written that hugging a pilgrim who comes back is like kissing black stone which means its sanctity is not its own but symbolic of grandeur of tawhid.
آثاره أنّه ورد: من عانق حاجّاً بغباره كان كأنما استلم الحجر الأسود.
A spiritual Ishmaelite 