{{short description|Alchemical procedure for creating the philosopher's stone}} {{for multi|the Great Work in Hermeticism|Great Work (Hermeticism)|the Great Work in Thelema|Great Work (Thelema)}} [[File:Splendor Solis - Portion of Plate 3.jpg|thumb|Colors of the magnum opus seen on the breastplate of a figure from ''Splendor Solis'']] thumb|The Squared Circle: an Alchemical Symbol illustrating the interplay of the four elements of matter symbolizing the philosopher's stone; the result of the "Great Work"
In alchemy, the '''Magnum Opus''' or '''Great Work''' is a term for the process of working with the prima materia to create the philosopher's stone. It has been used to describe personal and spiritual transmutation in the Hermetic tradition, to refer to laboratory processes and chemical color changes, as a model for the individuation process, and as a device in art and literature. The magnum opus has been carried forward in New Age and neo-Hermetic movements, which sometimes attached new symbolism and significance to the processes. The original process philosophy has four stages:<ref>[https://www.scribd.com/doc/11441835/The-Four-Stages-of-Alchemical-Work The-Four-Stages-of-Alchemical-Work]</ref><ref>Joseph Needham. ''Science & Civilisation in China: Chemistry and chemical technology. Spagyrical discovery and invention: magisteries of gold and immortality''. Cambridge. 1974. p. 23</ref>
*''nigredo'', the blackening or melanosis *''albedo'', the whitening or leucosis *''citrinitas'', the yellowing or xanthosis *''rubedo'', the reddening, purpling, or iosis
The origin of these four phases can be traced at least as far back as the first century. Zosimus of Panopolis wrote that it was known to Mary the Jewess.<ref>Henrik Bogdan. ''Western esotericism and rituals of initiation''. Albany, New York: State University of New York Press. p. 197</ref> The development of black, white, yellow, and red can also be found in the Physika kai Mystika of Pseudo-Democritus, which is often considered to be one of the oldest books on alchemy.<ref>{{cite book |last1=Cavendish |first1=Richard |title=The Black Arts |date=1967 |publisher=Putnam |isbn=9780399500350 |page=150 }}</ref> After the 15th century, many writers tended to compress ''citrinitas'' into ''rubedo'' and consider only three stages.<ref>{{Cite web |url=http://www.e-scoala.ro/germana/mihai_stroe26.html |title=Meyrink und das theomorphische Menschenbild |access-date=2010-10-25 |archive-url=https://web.archive.org/web/20070912091757/http://www.e-scoala.ro/germana/mihai_stroe26.html |archive-date=2007-09-12 |url-status=dead }}</ref> Other color stages are sometimes mentioned, most notably the ''cauda pavonis'' (peacock's tail) in which an array of colors appear.
The magnum opus had a variety of alchemical symbols attached to it. Birds like the raven, swan, and phoenix could be used to represent the progression through the colors. Similar color changes could be seen in the laboratory, where, for example, the blackness of rotting, burnt, or fermenting matter would be associated with nigredo.
== Expansion on the four stages == Alchemical authors sometimes elaborated on the three or four color model by enumerating a variety of chemical steps to be performed. Though these were often arranged in groups of seven or twelve stages, there is little consistency in the names of these processes, their number, their order, or their description.<ref>Stanton J. Linden. ''The alchemy reader: from Hermes Trismegistus to Isaac Newton''. p. 17</ref>
Various alchemical documents were directly or indirectly used to justify these stages. The ''Tabula Smaragdina'' is the oldest document<ref>it is unclear if the text originates in the Middle Ages or in Late Antiquity, but it is generally assumed to predate 1150, when Gerard of Cremona translated it from the Arabic (Mircea Eliade, ''History of Religious Ideas'', vol. 3/1)</ref> said to provide a "recipe". Others include the ''Mutus Liber'', the twelve keys of Basil Valentine, the emblems of Steffan Michelspacher, and the twelve gates of George Ripley.<ref>From George Ripley's ''Compound of Alchymy''. (1471)</ref> Ripley's steps are given as:<ref>Stanton J. Linden. ''The alchemy reader: from Hermes Trismegistus to Isaac Newton.'' p.17</ref>
{| cellpadding="2" style="width: 500px; border: 0px;" |- | width="250px" | 1. Calcination || width="250px" | 7. Cibation |- | 2. Solution (or Dissolution)|| 8. Sublimation |- | 3. Separation || 9. Fermentation |- | 4. Conjunction|| 10. Exaltation |- | 5. Putrefaction || 11. Multiplication |- | 6. Congelation || 12. Projection |}
In another example from the sixteenth century, Samuel Norton gives the following fourteen stages:<ref>Mark Haeffner. ''Dictionary of Alchemy: From Maria Prophetessa to Isaac Newton.'' p.238</ref>
{| cellpadding="2" style="width: 500px; border: 0px;" |- | width="250px" | 1. Purgation || width="250px"| 8. Conjunction |- | 2. Sublimation || 9. Putrefaction in sulphur |- | 3. Calcination || 10. Solution of bodily sulphur |- | 4. Exuberation|| 11. Solution of sulphur of white light |- | 5. Fixation || 12. Fermentation in elixir |- | 6. Solution || 13. Multiplication in virtue |- | 7. Separation || 14. Multiplication in quantity |}
Some alchemists also circulated steps for the creation of practical medicines and substances, that have little to do with the magnum opus. The cryptic and often symbolic language used to describe both adds to the confusion, but it's clear that there is no single standard step-by-step recipe given for the creation of the philosopher's stone.<ref>Mark Haeffner. ''Dictionary of Alchemy: From Maria Prophetessa to Isaac Newton''. p.237</ref>
== Magnum opus in literature and entertainment == {{Further|Alchemy in art and entertainment}}
== References == {{reflist}}
{{Alchemy|state=expanded}}
Category:Alchemical processes