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The other three alchemical stages were nigredo (blackness), albedo (whiteness), and rubedo (redness).
In the Jungian archetypal schema the nigredo is the Shadow; albedo refers to the anima/animus (contrasexual soul images); citrinitas is the Wise old man (or woman) archetype; and rubedo is the Self archetype, which has achieved wholeness.
Si a sanguine, venit rubedo oculorum et faciei, plurimus risus.
The rubedo is highlighted by the resolution of story contraries, the production of
The wide and complicated web of schools taught the various aspects of alchemy, involving the philosophy of its Magnum Opus (The Great Work) that consisted of: "nigredo" (or putrefactio), the blackening (or putrefaction) - referring to individuation, purification, burning impurity; "albedo", whitening - meaning enlightenment or becoming spiritual, and "rubedo", the reddening - namely the unity of man with god, merging of the limited into the unlimited.