Fascinating subject- there's also a documentary that was made about this called All The Gold You Can Eat, with an interesting website- worth a look.
Laurence Gardner also wrote about it in Lost Secrets of the Sacred Ark (iirc)...
Quoting: Know.Thyself [
link to www.allthegoldyoucaneat.com]
"What if the alchemists were right?"
All The Gold You Can Eat is a
groundbreaking independent
documentary that sets out to explore
and unravel one of history's greatest
enigmas: the mysterious and secretive
art of transforming base metal into gold.
This breathtaking and exquisitely shot
film is an alchemical road movie that
traverses the USA in its quest to unlock
the legendary Philosophers Stone,
fabled for curing all ailments, granting
spiritual enlightenment, and making gold.
What is most extraordinary about the
characters within the film, and their
remarkable claims regarding an exotic
substance called ORMUS, is that against
(more info at link)
all expectations, they might be right.