alchemical substance rebis https://en.wikipedia.org/wiki/Rebis https://www.wikidata.org/wiki/Q3931255 A theorized end product of an alchemical magnus opus. Supposedly, after one has gone through the stages of putrefaction and purification, separating opposing qualities, those qualities are united once more in what is sometimes described as the divine "hermaphrodite", a reconciliation of spirit and matter, a being of both male and female qualities as indicated by the male and female head within a single body. Note that this consideration of perfection as a "divine hermaphrodite" was completely in conflict with intersexphobia in the medieval era.