I am almost done with my pigment that I've been making! YAY!
It's verdigris, which by modern terms is mostly hydrated copper acetate, with some copper carbonate and some copper hydroxide. Behold, how lovely the color!
You can see the whole process on
my Flickr blog. Oh, and there's a partially completed blackwork handkerchief at the end of that set, it's my next project.