Pierre Charles Faber was a French alchemist, believed by Mr Waite to have originated from Montpellier. He was a doctor of medicine and an infamous chemistry scholar of the time. Faber wrote many texts on the subject and was responsible for the compilation of numerous treatises. His most significant writings were 'Alchimista Christianus' and 'Hercules Pischymicus' which were published in Toulouse in 1632 and 1634. He claimed that the philosopher's stone is made from mercury, salt and sulphur and that it can be found in all compounded circumstances.