Opus alchymicum

 


Opus alchymicum, or opus, sometimes called the “work,” is the¬†alchemical¬†process of transmuting cheaper metals into more precious ones. Initially the opus alchymicum had four stages: the¬†nigredo¬†(black), the¬†albedo¬†(white/silver), the¬†citrinitas¬†(yellow), and the¬†rubedo¬†(red/gold). After the fifteenth century references to the citrinitas stage were gradually phased out leaving the opus alchymicum with three main stages.¬†A.G.H


Sources:

Drury, Nevil. “Opus, Stages of the”¬†The Watkins Dictionary of Magic. London. Watkins Publishing. 2005. pp. 218-219