A seventeenth-century engraving shows a figure with two heads, one male and one female, standing in a pool of moonlight while holding a compass and a square. The creature has wings. Its body is bisected vertically: one half dark, one half light. This is the Rebis, and it is not a monster. It is the goal.

The Rebis (Latin for “two things” or “the thing of two”) is the alchemical symbol of the completed Great Work: a being that has unified all opposites within itself — male and female, spirit and matter, sun and moon, fixed and volatile. In the laboratory tradition, the Rebis represented the Philosopher’s Stone in its final, perfected form. In the spiritual tradition, it represented the practitioner who had achieved full integration of the psyche.

What is the Rebis in alchemical tradition?

The word Rebis comes directly from Latin res bina, meaning “two things” or “a double matter.” It appears in alchemical texts as early as the fifteenth century, most famously in the work of the German alchemist Basil Valentine (a pseudonym, active around the late 1400s) and later in the Rosarium Philosophorum (1550), a foundational collection of alchemical emblems.

The Rebis is the endpoint of the opus alchymicum, the Great Work. It is what remains after the three primary stages — nigredo (blackening, putrefaction), albedo (whitening, purification), and rubedo (reddening, perfection) — have been completed. The Rebis is the lapis philosophorum, the Philosopher’s Stone, rendered in human form.

But the Rebis is not merely a symbol of a substance. It is a symbol of a state of being. The alchemist who achieved the Rebis had, in theory, transformed not only lead into gold but the self into something beyond the limitations of ordinary human consciousness.

Where does the Rebis appear in historical texts?

The most famous depiction of the Rebis appears in the Viridarium Chymicum (The Chemical Garden) of Daniel Stolcius, published in 1624. Stolcius was a Bohemian physician and alchemist who compiled a series of emblematic engravings based on earlier alchemical manuscripts. His Rebis stands with one foot on the moon and one on the sun, holding a compass in one hand and a square in the other, tools of measurement and construction, symbols of the alchemist’s role as a builder of the self.

Earlier, the Rosarium Philosophorum (1550) had already established the Rebis as the final image in a sequence of twelve woodcuts depicting the alchemical marriage. The sequence shows the King and Queen (Sulfur and Mercury, Sun and Moon) meeting, dying, being buried, and rising as a single androgynous figure. This is the coniunctio oppositorum, the union of opposites, and it is the central operation of alchemical transformation.

The Rebis also appears in the work of Michael Maier (1568–1622), the German alchemist and physician whose Atalanta Fugiens (1617) paired fifty alchemical emblems with music. Maier’s Rebis is less anthropomorphic and more explicitly chemical: a double-bodied figure representing the fusion of the two principal alchemical substances, Sulfur (active, masculine, fiery) and Mercury (passive, feminine, watery).

The Rebis is not a creature to be worshipped. It is a condition to be achieved. In spiritual alchemy, the tradition that reads the laboratory operations as metaphors for inner transformation, the Rebis represents the integrated self, the person who has reconciled every internal contradiction.

The union of opposites

The most obvious symbolism is sexual. The Rebis is male and female in one body. This is not androgyny as a third gender but as the transcendence of gender as a limiting category. The alchemist who becomes the Rebis has access to both the active, projective energy traditionally called “masculine” and the receptive, transformative energy traditionally called “feminine.” Neither dominates. Both serve.

This union extends beyond gender. The Rebis also unites:

  • Spirit and matter (the soul and the body, no longer in conflict)
  • Heaven and earth (the celestial and the terrestrial, represented by the sun and moon beneath the feet)
  • Conscious and unconscious (the rational mind and the instinctual self)
  • Fixed and volatile (the stable and the changeable, the two poles of alchemical matter)

The Philosopher’s Stone as a state of being

The Rebis is the Stone made flesh. The Philosopher’s Stone was said to cure any illness, transmute base metals, and grant longevity. The Rebis, as its human equivalent, confers spiritual health: the ability to see clearly, act without internal conflict, and live in a state of permanent equilibrium.

This is why the Rebis holds a compass and a square. The compass measures the heavens; the square measures the earth. The Rebis can navigate both realms because it belongs fully to neither and fully to both.

The completion of the Great Work

In the alchemical sequence, the Rebis appears after the rubedo, the red stage of perfection. But the rubedo is not the end. The rubedo is the moment of crystallization, the appearance of the red stone. The Rebis is what happens when that stone is inhabited by a human consciousness. It is the Stone that has become a person.

The Rebis was not a practical tool in the sense of a crucible or an alembic. It was a visualization aid, a meditation focus, and a signature of completion.

In laboratory alchemy

For the laboratory alchemist, the Rebis was the final product of the coniunctio operation. The actual procedure involved combining the purified Sulfur and Mercury (the “two seeds” of metals) in a sealed vessel and heating them through a long series of color changes. When the substance turned red and then white again, and when it could no longer be separated into its components, the alchemist had produced the Rebis, the Stone in its double nature.

The Rebis was also called the Azoth, a term derived from Arabic al-zā’ūq (mercury) but used by alchemists like Basil Valentine to mean the universal solvent, the spirit of life that could dissolve and reconstitute any substance. The Rebis and the Azoth are functionally identical: the perfected matter that contains all powers.

In spiritual alchemy

The spiritual alchemist used the Rebis as a mandala for meditation. The image of the two-headed androgyne was contemplated not as an external deity but as a map of the practitioner’s own psyche. The goal was to feel the union of opposites within oneself, to experience the moment when the internal war between reason and instinct, will and desire, spirit and body, came to an end.

This practice was described by the Swiss alchemist and physician Paracelsus (1493–1541) in his writings on the Archeus, the inner alchemist that governs the body’s transformations. For Paracelsus, the Rebis was not a product but a process: the ongoing integration of the self that never fully ends but can be experienced as a state of grace.

The Rebis is often confused with other alchemical and esoteric figures. The distinctions matter.

The Rebis vs. the Hermaphrodite

The terms are sometimes used interchangeably, but they are not identical. The hermaphrodite in alchemy is the result of the first stage of the coniunctio, the union of the King and Queen before they die and are resurrected. The hermaphrodite is still imperfect, still bound to the body. The Rebis is the resurrected hermaphrodite, the one who has passed through death and emerged transformed.

In the Rosarium Philosophorum, the hermaphrodite appears in the seventh woodcut. The Rebis appears in the twelfth and final woodcut. The difference is the difference between a marriage and a resurrection.

The Rebis vs. the Androgyne

The androgyne (from Greek anēr, man, and gunē, woman) is a broader term for any being that combines male and female characteristics. In Neoplatonic philosophy, the original human was an androgyne, split by the gods into two sexes. The Rebis is a specific alchemical version of the androgyne, one that has been produced through the operations of the Great Work rather than existing as a primordial state.

The Rebis vs. the Baphomet

Éliphas Lévi’s Baphomet (from Dogme et Rituel de la Haute Magie, 1854) shares visual elements with the Rebis: the androgynous body, the torch on the head, the arms pointing to the moon and sun. But the Baphomet is a symbol of the absolute, the synthesis of all opposites in the universe. The Rebis is a symbol of the individual who has achieved that synthesis within themselves. The Baphomet is cosmic; the Rebis is personal.

Several misconceptions persist, even in esoteric circles.

Misconception 1: The Rebis is a deity. It is not. The Rebis was never worshipped. It was a symbol of an achieved state, not a being to be petitioned or propitiated. Alchemists did not pray to the Rebis. They worked to become it.

Misconception 2: The Rebis represents a literal physical transformation. While laboratory alchemists did believe they could produce a physical Stone, the Rebis as a human figure was always understood as symbolic. No alchemist claimed to have met a walking two-headed person. The image is allegorical.

Misconception 3: The Rebis is the same as the “divine hermaphrodite” of Gnosticism. Gnostic texts describe a primordial androgyne, the Anthropos, who existed before the creation of the material world. The Rebis is not primordial. It is achieved. It comes at the end of a process, not the beginning.

Misconception 4: The Rebis is a feminist symbol. Some modern interpretations read the Rebis as a celebration of gender fluidity or non-binary identity. While the Rebis does transcend binary gender, it does so within a framework that treats male and female as principles (active and passive, sulfur and mercury) rather than as social identities. The Rebis is not about rejecting gender. It is about integrating the energies that gender symbolizes.

FAQ

Is the Rebis mentioned in the Bible? No. The Rebis is a late medieval alchemical symbol with no direct biblical precedent. Some interpreters have linked it to the “male and female” of Genesis 1:27, but this is an anachronistic reading.

Can the Rebis be created through meditation? In spiritual alchemy, yes. The Rebis is the goal of the opus: the complete integration of the psyche. Meditation on the Rebis image is one method, but it must be accompanied by the full sequence of inner work, nigredo, albedo, rubedo.

Why does the Rebis have two heads? The two heads represent the dual nature of the perfected being: one head sees with the wisdom of the sun (conscious, rational, active), the other with the wisdom of the moon (unconscious, intuitive, receptive). Both are necessary for complete perception.

Is the Rebis the same as the Philosopher’s Stone? In alchemical symbolism, yes. The Rebis is the Philosopher’s Stone rendered as a human figure. The Stone is the substance; the Rebis is the person who has become that substance.

The Rebis is not a curiosity of old engravings. It is the answer to a question that every practitioner faces: what happens when the war inside you ends. The two-headed figure in the moonlight is not a monster. It is a mirror. The compass and the square are not tools of measurement. They are tools of construction. The Rebis is what we are building.

For a deeper look at the stages that lead to this state, see our guide to the alchemical Great Work. The Rebis is the final image in a sequence that begins with the nigredo, the blackening, and moves through the coniunctio, the sacred marriage that makes the Stone possible.