alchemy: gold (aurum)

alchemy chemistry gold aurum sol metal of sun precious noble value ultimate goal search for alchemists ore aurora shining chemical formula alchymia iatrochemie spagyric magic mystic hermetic kabbalistic medieval mystery occult sign symbol philosophers stone laboratory elixir life great deed grimoire transmutation quintessence lapis philosophorum magisterium chrysopoeia tetrasomata synthesis magnum opus knowledge herbs substance crystals minerals balsam potabile panacea alkahest universal solvent