Lapis lazuli occupies a remarkable double register in the depth-psychology corpus. In its mythological dimension, the stone functions as the sacred material par excellence of the ancient Near Eastern Goddess: Campbell, Harvey, and Baring demonstrate that Inanna and Ishtar claimed lapis lazuli as ‘their’ stone, adorning cult statues, burial regalia, and temple architecture from Uruk onward, its celestial blue indexing the Queen of Heaven’s sovereignty over moon, Venus, and the cosmic order. In its alchemical dimension — which absorbs and transforms the mythological inheritance — lapis lazuli shades into the broader symbolism of the philosopher’s stone (lapis philosophorum), where Jung, Hillman, von Franz, and Moore develop a sustained psychological reading. Here the lapis connotes the Self as individuated totality: incorruptible, paradoxical, simultaneously material and transcendent, a deus absconditus hidden in matter and in man. Jung’s pivotal argument is that the lapis complements rather than merely parallels Christ, compensating one-sided ecclesiastical spirituality with an image of divinity extracted from human interiority. Moore extends this to a therapeutic imperative: the lapis lazuli at ‘the core of your heart’ requires the full integration of shadow. The sapphirine flower, the lapis-Christ parallel, the stone’s mercurial fusibility (Hillman), and its function as ‘key’ to unconscious symbols (von Franz) represent the central interpretive tensions.