Gold, such as anything else, can be used for good or evil. Generally speaking, gold is more associated with beneficial and good uses rather than with dark and evil ones.
One of the most famous uses of gold in White Magic, the magic of good and selfless purposes, is being an essential component of making the Elixir of Life. It is a legendry potion rumored to give eternal youth, immortality and have healing powers that might reach to extent of creating life. There are different recipes originated from different parts of the world, almost every one of them uses gold as the main component. Ironically, many of the elixir’s recipes contain the poisonous mercury, which many Chinese kings died from mercury intoxication.
The origin of this concept is unknown, as it appeared in two separate parts of the world at a close time. One of them appeared in ancient Egyptian myth of the deity Thoth. The Egyptian deity resurrected both Osiris and Horus using gold and magic. Another old myth appeared in ancient China revolved around sending Taoist priests to the east in a quest to search for the elixir. They didn’t find what they were looking for and they found Japan instead. Later on, an Alchemic book prescribes gold, among other elements, to make the elixir of life.
Both civilizations regarded gold as a potent element that can reverse harmful effects and brings benefits to its user. Perhaps the non-tarnishing metal was strange and influential to their basic sciences. However, these myths might be true as gold secrets have not been fully uncovered yet. It might have true healing powers, such as using gold nano-particles in curing cancer or cosmetics. At least, modern science has proved it’s not a toxic or a bio-active metal that harm our health.
Perhaps one day we could make a real Elixir of Life, curing diseases and lengthening our life spans. Who knows? Probably gold will be an essential component to that too.