Anyone leafing through an alchemical manuscript often finds, beside the text, a kind of shorthand: triangles, circles, crosses and crescents combined with one another. They are not ornaments. They are graphic signs standing in for the names of elements, metals, substances and operations. Learning to recognise them is like learning an alphabet: at first it looks like a secret code, then you discover it has a surprisingly coherent logic.
Three basic forms
Almost all alchemical signs arise from the combination of a few elementary figures, each with a precise meaning.
| Form | Traditional meaning |
|---|---|
| Circle | spirit, totality, perfection |
| Crescent | soul, receptivity, what reflects |
| Cross | matter, the four elements, the manifest world |
| Triangle | the elements and the movement of energies |
When looking at a compound sign, it is worth breaking it down into these parts and asking in what order they stand: what is above and what is below. Position, as always in Hermeticism, carries meaning.
The four elements
The elements are represented by triangles.
- Fire: a triangle pointing upwards, like a rising flame.
- Water: a triangle pointing downwards, like water descending and gathering.
- Air: an upward triangle crossed by a horizontal line.
- Earth: a downward triangle crossed by a horizontal line.
The logic is clear: fire and air tend to rise, water and earth to descend. The horizontal line indicates that air and earth are «denser» or tempered forms of their respective main elements. Superimposing the two main triangles gives the six-pointed star, which in an alchemical context represents the union of opposites.
The seven metals
The signs of the metals coincide with those of the corresponding planets.
- Gold (Sun, ☉): a circle with a dot at the centre. Spirit that has found its centre.
- Silver (Moon, ☽): a crescent. The soul reflecting light.
- Mercury (☿): a crescent above a circle, itself above a cross. Soul, spirit and matter brought together: that is why mercury is the mediator par excellence.
- Copper (Venus, ♀): a circle above a cross. Spirit ruling matter.
- Iron (Mars, ♂): a circle with an arrow; in older forms the cross above the circle. Matter pressing on spirit, force directed outwards.
- Tin (Jupiter, ♃): a crescent joined to a cross, resembling the numeral four. The soul rising above matter.
- Lead (Saturn, ♄): a cross with a crescent below, resembling a letter h. Matter weighing on the soul.
Read this way, the ladder of metals becomes visible: in lead the cross stands on top; in gold the cross has disappeared and only the circle with its centre remains.
The three principles
The three alchemical principles also have their signs.
- Sulphur: an upward-pointing triangle set above a cross. Fire manifesting in matter.
- Salt: a circle cut by a horizontal line. The substance that fixes and gives body.
- Mercury: the same sign as the metal, because the mercurial principle and the metal share a mobile nature.
Substances and operations
Manuscripts also use signs for substances common in laboratories. Antimony, for example, is often represented by a circle surmounted by a cross, almost an inverted sign of Venus. There are signs for aqua fortis, for vitriol, for sal ammoniac, and even for operations such as distilling or subliming, or for units of time such as day and night.
These signs were not entirely uniform. Each period, and sometimes each author, introduced variants. That is why tables of signs were compiled in various languages from the seventeenth century onwards to help readers find their way.
How to practise
- Draw by hand the signs of the seven metals, observing how the positions of circle, crescent and cross change.
- Break down each sign into its elementary parts and write the meaning of each beside it.
- Read an alchemical plate and identify the signs it contains before consulting the text.
- Meditate on a sign for a few minutes, asking what relationship between spirit, soul and matter it expresses.
This exercise turns the glyphs from a list to be memorised into a living language, able to suggest meanings even where the text is silent.
In short
- Alchemical signs combine a few basic forms: circle, crescent, cross and triangle.
- The elements are triangles, pointing up or down, with or without a horizontal line.
- The metals use the planetary signs, which show the relationship between spirit, soul and matter.
- Signs varied between authors and periods: read them through their logic, not rigidly.
