♄ is the planetary glyph for Saturn, the slowest and most distant of the classical planets. In alchemy, it is the symbol for lead (Plumbum), the base metal of heaviness, limitation, and time. The glyph itself is a stylized scythe or sickle, reflecting Saturn's role as the Reaper and the lord of boundaries and structure.

Position on the Tree of Life

On the Tree of Life, ♄ corresponds to the second Sephirah, Chokmah (Wisdom). This placement is paradoxical: Chokmah is the first outpouring of dynamic, creative force, yet it is linked to the densest and most restrictive metal. This pairing signifies that the highest wisdom is found in the acceptance of limitation and the mastery of form. Saturn's gravity and slowness here represent the necessary contraction that precedes all manifestation.

Astrological and planetary correspondence

Astrologically, Saturn rules Capricorn and Aquarius, and is exalted in Libra. It is the planet of discipline, karma, structure, and the father. In alchemical tradition, lead is the prima materia, the starting point of the Great Work—the dense, dark, and imperfect substance that must be transmuted into gold. Its planetary metal is cold and dry, associated with the element Earth and the direction North.

Historical context

Saturn/lead has a dual history. In ancient Mesopotamia, Saturn was Ninurta, god of agriculture and war. The Greeks called it Cronus, the titan who devoured his children, a myth reflecting lead's corrosive and consuming nature. Roman Saturnalia inverted social order, a festival of chaos within strict bounds. In medieval alchemy, lead was the 'black dragon' or 'Saturn's child,' the nigredo stage of putrefaction necessary for rebirth. Paracelsus linked lead to the 'ens seminis' (seed essence), while Basil Valentine wrote of the 'triumphal chariot of antimony' as a remedy for lead's toxicity. The metal's heaviness and dullness made it the perfect symbol for the material world's inertia, which the alchemist must overcome.

In table 777, ♄ appears at step 2 (Chokmah) of the Alchemical Metals scale, representing the initial, dense seed of wisdom that must be broken down and refined through the subsequent Sephiroth.