How Have Alchemy Symbols Been Used?

Since the beginning of alchemy, alchemists have used symbols to represent different elements. Alchemy symbols sometimes contain hints of the qualities the element was thought to have, as well as the history of the element. Using symbols helped alchemists keep their work secret from non-alchemists who wouldn’t recognize the symbols. 

Because early alchemy also drew much of its information from astrology, many alchemy element symbols are connected to planets or other celestial bodies. Alchemy symbols continued to be used until the 18th century, becoming more standardized as time went on.