The Quran mentions several metals, most prominently iron (hadid), gold (dhahab), silver (fiddah), and copper (nuhas/qitr), each with profound theological and practical significance. According to classical Islamic scholarship, these metals are not merely inert elements but are presented as divine signs (ayat) of Allah's creative power and provision for humanity. Iron is highlighted for its strength and its role in establishing justice and order. Gold and silver are depicted as adornments of worldly life and a test of one's detachment from materialism, while also serving as a medium of exchange and a reward in the afterlife. Copper is shown to have both constructive and destructive power, used by Dhul-Qarnayn for protection and mentioned as an element of punishment in the hereafter. The mention of these metals underscores a key Quranic theme: the materials of this world are tools that can be used for good or for ill, and their true value is determined by their use in accordance with divine guidance.