I follow Pete Ward on IG and recently ordered some of his own hand foraged/processed and packaged earth pigments from the Cornwall area where he lives. I chose Peppercombe Red, Fremington Grey and Fremington Yellow Ochre. Pete very kindly added Fremington Burnt Umber at no extra cost .. so I could play☺️
I decided to do some very basic quick tests. I don’t have Gum Arabic, so just used water to make the watercolour paint and then did a strip where I dropped some isopropyl alcohol onto it. I also used Pebeo Binder and finally Galleria structure gel, which is not dry in the photos, so I’m keen to see what it looks like dry. Here are some pics of the experiments

I ground the yellow ochre pigment a little onto my glass mixing plate with the back of a spoon, which did make it quite fine but to be honest I prefer it in the state I received it. The grittiness makes it a more primordial experience!
I did a very small study on Atlantis 400gsm paper adding some white and black acrylic.

I love the natural texture and colours. I will be doing more work with these pigments on canvas.