Essence.
It is a stone that attracts iron; if you burn it, it turns into bloodstone, and the bloodstone property becomes its property.
Choice.
The best magnetite is black, permeated with red, pure, without impurities.
Actions and properties.
It cleanses and cleanses.
Eruption organs.
It is given to drink in wine to those who have swallowed iron filings, and to those who have iron slag stuck in their stomach; magnetite draws out slag and sawdust and accompanies them as they exit. It is said that if given to drink in honey-sweetened water in the amount of three obols, it will remove thick chyme.