Alchemy is an ancient branch of natural philosophy, a philosophical and protoscientific tradition that was historically practised in China, India, the Muslim world, and Europe. In its Western form, alchemy is first attested in a number of pseudepigraphical texts written in Greco-Roman Egypt during the first few centuries AD. Greek-speaking alchemists often referred to their craft as “the Art” (τέχνη) or “Knowledge” (ἐπιστήμη), and it was often characterised as mystic (μυστική), sacred (ἱɛρά), or divine (θɛíα).
Abū Mūsā Jābir ibn Ḥayyān, died c. 806−816, is the purported author of a large number of works in Arabic, often called the Jabirian corpus. The c. 215 treatises that survive today mainly deal with alchemy and chemistry, magic, and Shi'ite religious philosophy. However, the original scope of the corpus was vast, covering a wide range of topics ranging from cosmology, astronomy and astrology, over medicine, pharmacology, zoology and botany, to metaphysics, logic, and grammar.
The philosopher's stone is a mythic alchemical substance capable of turning base metals such as mercury into gold or silver; it was also known as "the tincture" and "the powder". Alchemists additionally believed that it could be used to make an elixir of life which made possible rejuvenation and immortality.
Nicolas Flamel was a French scrivener and manuscript seller. After his death, Flamel developed a reputation as an alchemist believed to have created and discovered the philosopher's stone and to have thereby achieved immortality. These legendary accounts first appeared in the 17th century.
In Renaissance alchemy, alkahest was the theorized "universal solvent". It was supposed to be capable of dissolving any composite substance, including gold, without altering or destroying its fundamental components. By extracting from composite substances their fundamental virtues and properties, alchemists hoped to gain control of invaluable medical healing properties. For this reason the alkahest was earnestly sought. At the same time, its very existence was debated among alchemists and philosophers.
Vitriol is the general chemical name encompassing a class of chemical compounds comprising sulfates of certain metals – originally, iron or copper. Those mineral substances were distinguished by their color, such as green vitriol for hydrated iron(II) sulfate and blue vitriol for hydrated copper(II) sulfate.
Pseudo-Geber is the presumed author or group of authors responsible for a corpus of pseudepigraphic alchemical writings dating to the late 13th and early 14th centuries. These writings were falsely attributed to Jabir ibn Hayyan, an early alchemist of the Islamic Golden Age.
The Emerald Tablet, the Smaragdine Table, or the Tabula Smaragdina is a compact and cryptic Hermetic text. It was a highly regarded foundational text for many Islamic and European alchemists. Though attributed to the legendary Hellenistic figure Hermes Trismegistus, the text of the Emerald Tablet first appears in a number of early medieval Arabic sources, the oldest of which dates to the late eighth or early ninth century. It was translated into Latin several times in the twelfth and thirteenth centuries. Numerous interpretations and commentaries followed.
The elixir of life, also known as elixir of immortality, is a potion that supposedly grants the drinker eternal life and/or eternal youth. This elixir was also said to cure all diseases. Alchemists in various ages and cultures sought the means of formulating the elixir.
Petrus Bonus was a late medieval alchemist. He is best known for his Precious Pearl or Precious New Pearl, an influential alchemical text composed sometime between 1330 and 1339. He was said to have been a physician at Ferrara in Italy, causing him to sometimes be known as Petrus Bonus of Ferrara or as Petrus Bonus the Lombard. An Introduction to the Divine Art is also attributed to him but was printed much later, in 1572.
John Dastin (c.1293-c.1386) was an English alchemist of the fourteenth century. Little is known of his life beyond the texts which are attributed to him. Dastin is known for correspondence with Pope John XXII and Cardinal Napoleone Orsini in defense of alchemical practice, dated to 1320.
Muḥammad ibn Umayl al-Tamīmī, known in Latin as Senior Zadith, was an early Muslim alchemist who lived from c. 900 to c. 960 AD.
Sir George Ripley was an English Augustinian canon, author, and alchemist.
Alchemy has had a long-standing relationship with art, seen both in alchemical texts and in mainstream entertainment. Literary alchemy appears throughout the history of English literature from Shakespeare to modern Fantasy authors. Here, characters or plot structure follow an alchemical magnum opus. In the fourteenth century, Chaucer began a trend of alchemical satire that can still be seen in recent fantasy works like those of Terry Pratchett.
Alchemy in the medieval Islamic world refers to both traditional alchemy and early practical chemistry by Muslim scholars in the medieval Islamic world. The word alchemy was derived from the Arabic word كيمياء or kīmiyāʾ and may ultimately derive from the ancient Egyptian word kemi, meaning black.
The Mirror of Alchimy is a short alchemical manual, known in Latin as Speculum Alchemiae. Translated in 1597, it was only the second alchemical text printed in the English language. Long ascribed to Roger Bacon (1214-1294), the work is more likely the product of an anonymous author who wrote between the thirteenth and the fifteenth centuries.
Guglielmo Gratarolo or Grataroli or Guilelmus Gratarolus was an Italian doctor and alchemist.
De Alchemia is an early collection of alchemical writings first published by Johannes Petreius in Nuremberg in 1541. A second edition was published in Frankfurt in 1550 by the printer Cyriacus Jacobus.
Johann of Laz, or Johannes von Laaz, Joannes de Lasnioro, was a Bohemian alchemist during the first half of the fifteenth century.
