Dorothea Juliana Wallich

Dorothea Juliana Wallich (also known as Dorothea Wallich or D. J. W.; Fischer; 1657 – 1725), was a German alchemist, one of the few women known to have practiced alchemy. She was also an apothecary, and a mine owner in Saxony. in 1657. Her parents were Heinrich Fischer (1611–1665), a tax collector, and Anna-Catharina Lippach, the daughter of .

Dorothea married Johann Wallich on March 1, 1674.

In the second edition of Hermann Fictuld's Der Längst gewünschte und versprochene chymisch-philosophische Probier-Stein, auf welchem sowohl der wahrhafften hermetischen Adeptorum als der verführischen und betriegerischen Sophisten Schrifften sind probirt und nach deren Werth dargestellt worden, beschrieben in zweyen Classen (The long-desired and promised chemical-philosophical touchstone, on which the writings of both the true hermetic adepts and the deceptive and fraudulent sophists have been tested and their value assessed, described in two classes) (1753), an annotated bibliography of alchemical writings, he distinguishes between those he considers true adepts and sophists or charlatans. He criticized the works of alchemists such as Wallich with "great severity", castigating them as fit only for burning.

Jakob Böhme was an influence on her work.

Selected works Das mineralische Gluten, doppelter Schlangen-Stab, Mercurius Philosophorum (The mineral gluten, double serpent staff, Mercurius Philosophorum) (1705) Der Philosophische Perl-Baum: das Gewächse der drey Prinzipien (The Philosophical Pearl Tree: the plant of the three principles) (1722) Schlüssel zu dem Cabinet der geheimen Schatz-Cammer der Natur (Key to the cabinet of the secret treasure chamber of nature) (1722)