|The eleventh process of Multiplication consists in the Stone being utilized to create gold.|
In alchemy, the process by which the Philosopher's Stone can find guarantee in the ability to transmute other metals is to subject the Stone to one final action: the Royal Marriage of the soul and spirit.
Derived from the Biblical account of God's command for Adam and Eve to 'be fruitful and multiply', the process of Multiplication is viewed as a requisite to ensure the fruitfullness of the Stone.
This process involves joining the Stone with a quantity of the Mercury from the first stage (Calcination), and having this material undergo the processes of Solution, Coagulation and Fermentation once more.
By this, the Stone will increase in both quantity and quality.