Quintessence Alchemy Symbol

Quintessence alchemy symbol
Quintessence is the latin style name of the fifth element used by medieval alchemists for a medium similar or identical to that thought to make up the heavenly bodies o r spirit that fills the universe generating its life and vitality.
In todays terms, we can relate to Quintessence as dark matter, or anti gravity. It is the unexplained perfection that holds life.
Quintessence was seen as an element
 in its purest and most perfect state and therefore, difficult to achieve and even to see.  Medicinal alchemists sought to isolate quintessence and incorporate it within medicine and elixirs.