The Guelphs and Ghibellines are feuding factions during the Italian Renaissance. Warfare and bloodshed between the two throw regions of...

George Ripley (c. 1415 -1490) is an English Augustinian Canon, author and alchemist. One of England's most famous alchemy practitioners,...

Artemisia annua or sweet wormwood appears in traditional Chinese medicine texts of Ge Hong ( 283 - 364 AD) as an early remedy to treat...

Ge Hong (葛洪; Gě Hóng , 283 - 364 AD), or Zhichuan (稚川) is a Chinese linguist, philosopher, physician, alchemist and writer during the...

The malaria parasite P. falciparum has existed for up to100,000 years. Its numbers rise c. 8000 BCE with the Neolithic Revolution....

Lapis lazuli or "blue stone" is prized for its depth and brilliance in paint as the color ultramarine. Before the 1800s, ultramarine...

Cosimo di Giovanni de' Medici, also known as Cosimo the Elder, is a leading figure in the rise of Florence as the Italian Renaissance...

Alchemy symbolism is an ancient and fluctuating system of intertwined elements compounded over more than 2000 years. A cornerstone of...

Gnosticism and Gnostic principles emerge in the first century AD, though they're believed to have deeper roots. Many different shades of...

Gnosticism emerges in the 1st century AD as a philosophical and religious movement seeking a unique perspective on spiritual...

Isaac Newton, English physicist and mathematician, has a deep interest in the occult. He writes of chronology, biblical interpretation...

Alchemy has origins in ancient medicine, metallurgy and gemology. As metallurgy evolves to coloring metals the goal is to make base...

Rosaceum or rosaceum oil is used in alchemical recipes for coloring gold or gems, and also has medicinal properties found in texts such...

Pedanius Dioscorides is a surgeon in the army of Emperor Nero . His knowledge of surgery and other medical skills suggests study in...

The Order of the Golden and Rosy Cross is a significant 18th century German Rosicrucian organization involved with mysticism and hidden...

Christian Rosenkreuz is the legendary founder of the Rosicrucians (Order of the Rose Cross). Three writings attributed to him appear in...

Tin purification is important to various alchemical practices, and a fundamental step in many recipes and formulas. In alchemy purified...

Asem is a stock metal mix in alchemy , usually prepared in quantity ahead of time and added to alchemical recipes as needed. Asem is...

Argyropoeia is the process of making silver from another metal, such as copper. Although gold-making or chrysopoeia is better known,...

Albertus Magnus ( c.  1200 - 1280) is a German Dominican friar, philosopher, scientist, and bishop, considered one of the greatest...