“The seven are gold, silver, copper, tin, mercury, lead and iron,” he continues. “Then Georg Brandt comes forward with cobalt. He said that this dark blue substance, the one that in impure forms can be turned into glazes for porcelain, is a new metal and he has a way of extracting it. No one believed him, but when I read one of his papers, I thought my God, he could be right. My next thought was, What if I could develop a new, richer color blue from Brandt’s
