It is a holy relic found at the Southeast corner of Kaaba. According to Islamic narrative, this stone was originally white but turned black due to sins of humanity.
In Arabic it is called Al-Ḥajaru al-Aswad, "Black Stone", which according to Islamic tradition dates back to the time of Adam and Eve. It is located in the eastern cornerstone of the Kaaba, the ancient sacred stone building towards which Muslims pray, in Makkah, Saudi Arabia. The Stone is a dark rock, polished smooth by the hands of millions of pilgrims. At one time it was broken into a number of fragments which were cemented into a silver frame on the side of the Kaaba. Although it has often been described as a meteorite, this hypothesis is still under consideration.