Within the depth-psychology corpus, ‘Metal’ functions as a richly stratified symbol operating simultaneously on cosmological, psychological, and material planes. The alchemical tradition, as recovered chiefly through Jung, Edinger, Hillman, von Franz, and Abraham, treats the seven metals — gold, silver, mercury, copper, iron, tin, and lead — as embodied expressions of planetary intelligences and, by extension, archetypal constituents of the psyche. Edinger crystallizes the governing correspondence: planets spin their metals into earth, and psychologically these metals represent the divine building-blocks of ego-formation. Hillman extends this framework with characteristic originality, reading each metal as possessing its own psychological discipline — iron demanding the rigors of Martian toughness, copper requiring Venusian refinement, silver mediating and cooling — and recovering the etymological ground of metalleia as ‘mine’ and ‘search,’ making the very act of inquiry metallic. For Plato, metal is defined by the structural uniformity of its water-particles in solid state, grounding later alchemical speculation in Timaean cosmology. Abraham’s lexicographical precision maps transmutation — the conversion of base metal into gold by the philosopher’s stone — as the central operative metaphor of the entire opus alchymicum. Tensions arise between metal as inert matter and metal as animated seed, a vital force with intentionality, and between its material substrate and its symbolic surplus as carrier of solar, lunar, and planetary soul.