let's consider correspondences whe already developed between sephiroth/chakras, planets and alchemical metals.

N° Psychological functions, Symbolism Chakra Physiological functions Sephira Planet Metal 

10 Spirituality = completion = 10 Crown (Sahasrara) Pineal gland; regulates night and day Kether 1st Swirling --- 

9 Imagination, Artistic abilities, 

art = closest to completion = 9 yin Chandra Ajna area Thalamic area, helps pituitary gland Chokmah Zodiac --- 

8 Rationality = structures = cubic = 8 corners Yang Surya: Ajna area Pituitary gland, controls other glands Binah Saturn lead 

7 Justice = law of God = 7 yin Visuddha Throat Chesed Jupiter tin 

6 Ego, communication = 6 Yang Visuddha To speak, mouth Geburah Mars iron 

5 Love, Openness = Humanity = 5 Heart: Anahata Heart, circulatory system, blood Tiphareth Sun gold 

4 Control of emotions

Social abilities = stability = 4 Yin : Navel Digestive system: 2nd phase assimilation, Netzach Venus copper 

3 Work = Business = masonry = 3 Yang: Solar Plexus: Manipura Digestive system: 1st phase: digestion Hod Mercury mercury 

2 Sexual energy = 1+1 = 2 Sex Swadhistana Reproductive organs Yesod Moon silver 

1 Physical energy, will to live, survival = basis = 1 Root Mulhadara Spinal column, Adrenal Malkuth Earth --- 

The alchemical process is therefore, in terms of these correspondences :

Alch_order alch1 alch2 alch3 alch4 alch5 alch6 alch7 

Metallic_order Lead Tin Silver Mercury Iron Copper Gold 

Chakras correspondences 8 - - > 7 - - > 2 - - > 3 - - > 6 - - > 4 - - > 5