The Black Stone, known as Al-Hajar al-Aswad, is indeed a significant object in Islamic tradition, but it is not explicitly mentioned in the Quran.
The Black Stone is located in the Kaaba, the cubical structure at the center of the Masjid al-Haram in Mecca. It holds a special place in the hearts of Muslims, as it is traditionally believed to have been given to Abraham by the angel Gabriel. While the Quran emphasizes the importance of the Kaaba as a direction for prayer (the Qibla) and a center of pilgrimage, it does not provide specific references to the Black Stone itself.
Muslims venerate the Black Stone and aim to touch or kiss it during the pilgrimage of Hajj, as part of the rituals performed. The emphasis in the Quran is on the act of worship, the importance of the Kaaba as a holy site, and the overarching themes of unity and submission to God.