Weekend Trivia -- Saturday
Morning All!! Cynthia is technologically challenged this morning, at least as far as getting to this side of the Forum, so I am posting this question for her. We will figure out, as the day goes by, how to add clues, if you smarties need them!!
Medieval artisans had a secret to creating red stained-glass windows. They added a certain metal compound to the glass.
What metal held the secret to red stained glass?
I/She will be back later!!