“The Secrets of the Seven Metals: A Bridge between Heaven and Earth” by Nicholas Kollerstrom
"Traditionally, alchemists always viewed the seven known metals as having a connection with the heavenly spheres. As gold was associated with the Sun, and silver with the moon, so likewise was copper for example linked to Venus. Do these old beliefs have any relevance in modern times? In my youth, I became interested when I found that experiments showed that these ancient affinities did really work. I started doing this work in the early 1970s, so this opus is a kind of of life-work.
Is silver really connected to the Moon and gold to the Sun, as alchemists used to believe? For thousands of years people have held such beliefs. We here take a new approach to this ancient subject. This will be of particular interest to astrologers and school chemistry teachers."
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