First published in 1996 by Dervy, *La pratique du grand oeuvre des philosophes* offers a concise exploration of the alchemical tradition as practiced by early modern philosophers. Drawing on historical texts, the work examines the symbolic and practical aspects of the "great work," focusing on the transformation of base materials such as lapis lazuli and mercury. Readers are introduced to the philosophical underpinnings that linked metallurgy, mysticism, and early chemical theory, revealing how alchemy served as a bridge between medieval occultism and the emergence of modern science. Though brief at just over one hundred pages, the book provides clear explanations of key processes, the role of precious stones, and the evolving language of experimentation. It serves as a useful reference for anyone interested in the history of chemistry, the cultural significance of alchemical practices, or the broader intellectual currents that shaped the scientific revolution.