Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This twelfth century alchemical treatise describes the entire process of preparing the philosopher’s stone. The three operations described here are 1) the preparation of the secret fire, 2) the preparation of alchemical mercury and 3) the preparation of the stone itself. However, the author’s instructions aren’t always linear.