by geologists as doubtful. The British Natural History Museum suggests that it may be a pseudometeorite; in other words, a terrestrial rock mistakenly attributed to a meteoritic origin. The Black Stone has never been analysed with modern scientific techniques and its origins remain the subject of speculation. See also Baetylus References Citations Bibliography Grunebaum, G. E. von (1970). Classical Islam: A History 600 A.D.–1258 A.D.. Aldine Publishing Company. Sheikh Safi-ur-Rahman al-Mubarkpuri (2002). Ar-Raheeq Al-Makhtum (The Sealed Nectar): Biography of the Prophet. Dar-us-Salam Publications. . Elliott, Jeri (1992). Your Door to Arabia. . Mohamed, Mamdouh N. (1996). Hajj to Umrah: From A to Z. Amana Publications. . Time-Life Books (1988). Time Frame AD 600–800: The March of Islam'', . Islamic pilgrimages Stones Sacred rocks Hajj Kaaba Meteorites in culture Hajj terminology