Alchemical consciousness occupies a distinctive and contested position within the depth-psychology corpus, functioning simultaneously as a historical phenomenon, a hermeneutic lens, and a transformative psychological ideal. Jung inaugurated the field’s engagement with this concept by demonstrating that the alchemists’ material operations were unconscious projections of psychic processes — projections that, once recognized, could be reclaimed as a phenomenology of individuation. For Jung, alchemical consciousness represents the gradual differentiation and union of opposites, a process culminating in what Mysterium Coniunctionis terms the unio mentalis. Edinger systematized this inheritance, treating the alchemical operations — calcinatio, solutio, mortificatio, and the rest — as a precise symbolic map of the psychotherapeutic encounter. Hillman pushed the tradition further still, insisting that alchemical consciousness resists the merely personalistic reading; the alchemical opus aims at the rescue of the cosmos as much as the individual soul, implicating anima mundi as an irreducible horizon. Giegerich, characteristically polemical, challenges the entire enterprise, arguing that Jungian interpretation mistakes alchemy for implicit personal psychology rather than recognizing it as a groping, historically conditioned form of logical consciousness superseded by modernity. Von Franz mediates these poles by tracing alchemical symbolism into the individuation process as a reversed creation myth. The concept thus remains a generative fault line across the tradition.