alt Hacker NewsPigments are a rabbithole that will suck you in and spit you out 10 years later with arcane knowledge about grinding up various gemstones, drying plants and all manner of minerals such as clays and so on. You will also be exceptionally well traveled.
If you're ever in the Netherlands I can recommend a visit to the Zaanse Schans where they have a mill[1] from the days when pigments were ground with windpower. You can see the colors and you'll have a better understanding of why Royal Blue[2] was Royal (because it was incredibly expensive to make a lasting blue pigment).
Fascinating stuff.
Thank you for the links, I really appreciate that. I have never been to the Netherlands, but it is someplace I would love to travel one day.
I imagine it would be a rabbit hole, but rabbit holes can be a lot of fun. I will have to work with the poor-man pigments though. No ultra expensive gemstone grinding for me :-).