Alchemy + Astrology: Planetary Metals & Transformations

BY NICOLE LAU

"As above, so below"—the Hermetic axiom that unites alchemy and astrology. The seven classical planets govern the seven metals, and their celestial movements influence alchemical transformations. Understanding planetary alchemy reveals that the cosmos is not separate from the laboratory, that celestial forces shape earthly matter, and that your birth chart is an alchemical blueprint for your soul's transformation.

This is alchemy written in the stars.

The Seven Planetary Metals

The Sacred Correspondence

The Hermetic Principle:

• Each planet governs a metal
• Each metal embodies planetary qualities
• Planetary movements affect metals and transformations
• Working with metals connects you to planetary forces

☉ Sun = Gold (Au)

Planetary Qualities:

• Vitality, consciousness, the Self
• Leadership, authority, radiance
• The heart, life force, spirit
• Day: Sunday

Metal Qualities:

• Incorruptible, doesn't tarnish
• Most noble metal
• Perfect, complete, the goal

Alchemical Meaning:

• The Philosopher's Stone
• Enlightened consciousness
• The perfected Self
• What all other metals aspire to become

Psychological:

• Your core identity, true Self
• Life purpose, creative expression
• What makes you shine

Chakra: Solar Plexus, Heart

☽ Moon = Silver (Ag)

Planetary Qualities:

• Emotion, intuition, the unconscious
• Receptivity, reflection, cycles
• The soul, inner world, dreams
• Day: Monday

Metal Qualities:

• Reflective, like the Moon reflects Sun
• Antibacterial, purifying
• Second most noble metal

Alchemical Meaning:

• The White Stone (lesser stone)
• Albedo (whitening)
• Purification, clarity
• The feminine principle

Psychological:

• Your emotional body, feelings
• Intuition, psychic sensitivity
• How you nurture and need nurturing

Chakra: Sacral

☿ Mercury = Quicksilver (Hg)

Planetary Qualities:

• Communication, intellect, adaptability
• Speed, change, mediation
• The messenger, the trickster
• Day: Wednesday

Metal Qualities:

• Liquid at room temperature
• Volatile, changeable
• Dissolves other metals (amalgamation)

Alchemical Meaning:

• The universal solvent
• The transformative agent
• Spirit, the volatile principle
• What connects and transforms

Psychological:

• Your mind, thoughts, communication
• How you process and share information
• Adaptability, versatility

Chakra: Throat

♀ Venus = Copper (Cu)

Planetary Qualities:

• Love, beauty, harmony
• Relationships, values, pleasure
• The heart, attraction, art
• Day: Friday

Metal Qualities:

• Beautiful reddish color
• Conducts heat and electricity well
• Malleable, workable

Alchemical Meaning:

• The green lion (copper's green patina)
• Love as transformative force
• Beauty emerging from base matter

Psychological:

• Your capacity to love and be loved
• What you value, find beautiful
• Relationships, harmony, art

Chakra: Heart

♂ Mars = Iron (Fe)

Planetary Qualities:

• Action, courage, aggression
• Will, desire, conflict
• The warrior, drive, assertion
• Day: Tuesday

Metal Qualities:

• Strong, hard, durable
• Rusts (oxidizes) easily
• Magnetic

Alchemical Meaning:

• The red man, the warrior
• Fire, heat, transformation through force
• What must be tempered and refined

Psychological:

• Your will, drive, anger
• How you assert yourself, take action
• Courage, passion, aggression

Chakra: Solar Plexus

♃ Jupiter = Tin (Sn)

Planetary Qualities:

• Expansion, wisdom, abundance
• Growth, optimism, meaning
• The teacher, philosopher, benefactor
• Day: Thursday

Metal Qualities:

• Soft, malleable
• Expands when heated
• Protective (used in plating)

Alchemical Meaning:

• Expansion of consciousness
• Growth, development
• The generous king

Psychological:

• Your beliefs, philosophy, meaning-making
• How you grow and expand
• Optimism, faith, wisdom

Chakra: Third Eye

♄ Saturn = Lead (Pb)

Planetary Qualities:

• Limitation, structure, time
• Discipline, responsibility, karma
• The teacher through hardship
• Day: Saturday

Metal Qualities:

• Heavy, dense, dull
• Toxic, poisonous
• The basest metal

Alchemical Meaning:

• Prima materia (starting point)
• What must be transformed
• Nigredo (blackening)
• The old king who must die

Psychological:

• Your limitations, fears, karma
• Discipline, structure, responsibility
• What you must master and transcend

Chakra: Root

Planetary Timing in Alchemy

Planetary Hours

The System:

• Each day is ruled by a planet (Sunday = Sun, Monday = Moon, etc.)
• Each hour of the day is ruled by a planet in sequence
• Alchemical operations performed during corresponding planetary hours are more potent

Example (Sunday):

• Sunrise hour: Sun
• 2nd hour: Venus
• 3rd hour: Mercury
• 4th hour: Moon
• 5th hour: Saturn
• 6th hour: Jupiter
• 7th hour: Mars
• 8th hour: Sun (cycle repeats)

Application:

• Work with gold during Sun hours
• Emotional/intuitive work during Moon hours
• Communication/study during Mercury hours
• Love work during Venus hours
• Action/courage work during Mars hours
• Expansion/wisdom during Jupiter hours
• Structure/discipline during Saturn hours

Planetary Transits

Major Alchemical Transits:

Saturn Return (ages 28-30, 56-60):

• Alchemical: Complete Nigredo, death of old self
• Psychological: Major life restructuring
• Work: Face your karma, build authentic structure

Uranus Opposition (age 42):

• Alchemical: Lightning strike (Tower card)
• Psychological: Midlife awakening
• Work: Break free from false structures

Jupiter Return (every 12 years):

• Alchemical: Expansion, new cycle
• Psychological: Growth opportunity
• Work: Expand consciousness, take risks

Your Birth Chart as Alchemical Blueprint

The Natal Chart = Your Prima Materia

Understanding:

• Your birth chart shows your starting material
• The raw elements you're working with
• Your unique alchemical formula
• What needs to be transformed

Planetary Placements as Alchemical Work

Sun Sign:

• Your core identity to develop
• The gold you're becoming
• Your life purpose, creative expression

Moon Sign:

• Your emotional body to purify
• The silver work (Albedo)
• Your intuition, inner world

Saturn Placement:

• Your lead to transform
• Your Nigredo work
• Your greatest challenge and teacher

Venus Placement:

• Your heart to open
• Love as transformative force
• What you value and attract

Mars Placement:

• Your will to direct
• The fire of transformation
• How you take action

Aspects as Alchemical Operations

Conjunction (0°):

• Alchemical: Union, blending
• Two planets fuse their energies
• Powerful transformation point

Opposition (180°):

• Alchemical: Polarity, tension
• Two planets in conflict
• Integration needed

Square (90°):

• Alchemical: Friction, heat
• Challenges that force growth
• The fire that transforms

Trine (120°):

• Alchemical: Flow, ease
• Natural harmony
• Gifts to develop

Practical Planetary Alchemy

Working with Planetary Metals

Wearing Metals:

• Gold jewelry: Strengthen Sun (confidence, vitality)
• Silver jewelry: Strengthen Moon (intuition, emotions)
• Copper jewelry: Strengthen Venus (love, beauty)
• Iron: Strengthen Mars (courage, will)

Meditation with Metals:

• Hold the metal during meditation
• Invoke the planetary quality
• Let the metal's vibration attune you

Planetary Elixirs

Spagyric Alchemy:

• Create plant tinctures during planetary hours
• Sun plants (chamomile, calendula) on Sunday
• Moon plants (jasmine, lotus) on Monday
• The planetary timing enhances potency

Alchemical Astrology Ritual

Monthly Practice (New Moon):

1. Note which sign the New Moon is in
2. Identify the ruling planet
3. Set intentions aligned with that planet's qualities
4. Work with corresponding metal/color/incense
5. Perform ritual during planetary hour

The Constant Unification

One System, Multiple Expressions

The Pattern:

• Alchemy: Seven metals transforming to gold
• Astrology: Seven planets influencing consciousness
• Kabbalah: Seven lower sephiroth on Tree of Life
• Chakras: Seven energy centers
• Music: Seven notes in the scale

Different languages, same truth. The sevenfold pattern of transformation.

Conclusion: Written in the Stars

Your birth chart is not fate—it's your alchemical formula. The planets show what you're working with, the metals reveal what you're transforming, and the transits indicate when the work intensifies.

You are not separate from the cosmos. The same forces that move planets move through you. The same metals that exist in earth exist in your body. The same transformations happening in the heavens are happening in your soul.

As above, so below. The stars are your laboratory. The planets are your teachers. The metals are your medicine. And you are the alchemist, transforming lead into gold, one planetary cycle at a time.

The next article explores "Alchemy Lab Setup: Modern Spiritual Practice"—creating your sacred space for alchemical work, whether physical laboratory or inner temple.

As you continue to explore the profound connections between celestial bodies and personal alchemy, remember that the quiet work of transformation often begins with intentional ritual and inner alignment. Embrace this journey with practices like the 40 manifestation rituals intention to reality to ground your planetary insights into tangible shifts, or allow the 13 new moon rituals lunar beginnings to guide your cycles of release and renewal. For deeper self-reflection on the archetypal forces at play, the tarot journaling prompts 100 questions for self discovery can illuminate the hidden patterns waiting to be transmuted into gold.