Alchemy Color Stages

In a tenth-century Byzantine manuscript held in Venice as Marcianus graecus 299, a small drawing shows a black crow floating on a coiled serpent. The image sits beside a recipe attributed to Zosimos of Panopolis, the fourth-century Egyptian alchemist whose writings are the earliest surviving place where the vocabulary of color appears in alchemy (Fowden, The Egyptian Hermes, 1986; Kahn, L’Alchimie et la Tradition, 2014). The vocabulary of the four color stages — the nigredo, the albedo, the citrinitas, the rubedo — is already half-formed in Zosimos. But the canonical four-stage schema is, in my view, principally a Jabirian and Latin medieval systematization. Holmyard traced the Jabirian development (Alchemy, 1957, pp. 153-156); Newman, in Promethean Ambitions (2004, pp. 137-148), showed how the Latin tradition absorbed and rigidified it. Principe’s The Secrets of Alchemy (2013) treats the schema as a working map rather than a chemical report, and that distinction is the one that matters most.

The nigredo: rotting is the point

The first stage of the magnum opus is the nigredo, the blackening, and the alchemists liked to make it sound worse than it was. The prima materia goes into a sealed flask. The flask goes into a warm ash bath. Weeks pass. When the alchemist eventually looks inside, the matter is black, foul-smelling, sometimes moving with maggots if the seal was poor. The literature is unsparing. The black crow, the dead king, the raven, the rotting corpse — these are the standard images, and they are not metaphors for some inner process. They are descriptions of the matter, more or less literally. The operations are calcination, dissolution, putrefaction. The patience required is real: most of the failures of the work happen here, because the alchemist mistakes the nigredo for failure rather than for the necessary first movement. The blackness is the dissolution of the form. Without the death, the rebirth has nothing to push against.

The albedo: the white queen

The nigredo is followed by the albedo, the whitening, and this is where the matter begins to look like something the alchemist can work with. The dominant operation is ablutio — repeated washing, filtration, distillation — and the result is a white substance, sometimes crystalline, sometimes resinous, often a fine powder (Principe, The Secrets of Alchemy, 2013, pp. 88-95). The alchemists called it the white stone, the white elixir, and the white dove, and the images of lunar, receptive, purified femininity cluster here for reasons that are partly chemical (silver salts are white) and partly theological (the moon receives the sun’s light). The circulatio — the long digestion in which the spirit is run repeatedly through the body of the matter — is the work of this stage. By the end, the matter is supposed to be capable of transmuting base metals into silver.

The citrinitas: a stage that almost wasn’t

The third stage, the citrinitas, is the controversial one. The earlier Greek and Latin alchemists often went straight from the white to the red, and the citrinitas is more characteristic of the later Latin and the Paracelsian traditions. The matter takes on a pale yellow color, and the alchemists read this as the first awakening of the sulfur, the moment when the active fire begins to assert itself inside the purified body of the work. Some alchemists treat the citrinitas as a distinct stage; most integrate it into the albedo or the rubedo. I think the more interesting reading is the one in which the citrinitas is a transitional phase, and the reader should not be surprised that the sources disagree. The operations are gentle heating, slow digestion, the preparation of the sulfur for its later marriage with the mercury.

The rubedo: the red king and the stone

The rubedo, the reddening, is the final stage of the magnum opus, and the moment the alchemists were working toward. The matter is brought to a deep red — the red of blood, of the sun, of the king in his robes. The alchemical images cluster densely here: the red king, the phoenix, the dragon, the sun, the ruby. The philosopher’s stone is the product of the rubedo, and the operations are long digestion, careful heating, the conjunction of sulfur and mercury in their perfected forms. The multiplication — the operation by which a small amount of the stone acts on a much larger amount of base metal — is a distinct final step in some traditions, integrated into the rubedo in others.

The three registers of the color stages

The single most important thing to understand about the color stages is that they operate simultaneously on three registers, and a reader who collapses them will get the wrong picture. On the material register, the stages describe the actual colors the matter shows in the flask. On the chemical register, the stages correspond — loosely, and with important caveats — to actual laboratory phenomena. The nigredo is the dissolution of metallic bodies in acid; the albedo is the precipitation and washing of salts; the rubedo is the formation of a red oxide. The caveats are essential. Principe and Newman have spent two decades warning against overconfident identifications of specific alchemical operations with modern chemistry. The alchemists were not doing modern chemistry. They were working with a different theoretical framework, and the color stages make sense inside that framework.

On the spiritual register, the stages are a map of inner transformation. The nigredo is the encounter with what Jung, in Mysterium Coniunctionis (1956), called the shadow. The albedo is the appearance of the anima or animus. The rubedo is the integrated self. Jung’s reading is not a reduction of alchemy to psychology; it is a reading of the alchemical symbolism as a sophisticated map of psychic life, and the reading is one of the most important features of the modern reception.

The color stages in the visual tradition

The color stages have a visual life of their own, and a folio of woodcuts in the Rosarium Philosophorum (printed in the 1550s, sometimes attributed to the German Rosarium tradition) is the most reproduced alchemical image sequence in the canon. Twenty illustrations trace the magnum opus from prima materia to philosopher’s stone, and the color stages are the spine of the sequence. The Splendor Solis of c. 1532-1535, attributed to “Trismosin” (almost certainly a pseudonym), offers twenty-two full-page watercolors with a more painterly palette. The Ripley Scroll, an English document of the fifteenth and sixteenth centuries, embeds the color stages in its continuous program. Maier’s Atalanta Fugiens (1617), the Musaum Hermeticum (1625), and the Theatrum Chemicum (1602-1661) all carry the schema forward. The cluster on alchemy in art takes up the visual tradition in more detail.

The modern reception

The color stages did not stop being useful in 1700. They are a working vocabulary in the Theosophical Society, the Hermetic Order of the Golden Dawn, the Anthroposophical Society, and the various modern Rosicrucian orders. The Jungian reading has carried the stages into the literature of depth psychology. They show up in science fiction and fantasy, in contemporary esoteric art, and in the popular culture of the modern world. The four colors are a powerful symbolic resource for thinking about transformation, death, and rebirth, and the resource has not been exhausted.

The reader who is approaching the color stages for the first time should be patient with the literature. The four colors are simple to learn and difficult to interpret. The interpretations depend on whether one is reading the stages as material events, as chemical events, or as spiritual events, and the best alchemical writers, in my opinion, are the ones who hold all three registers in view at once.