royal blue pigment
the royal blue pigment is a mixture of carbonates and iron oxides (copper phthalocyanine) which give a bright primary blue color. compatible with all binders and all techniques. In lime paste, a dosage of 20% of the weight of lime gives a sustained tone, we can go up to 30%, beyond that it will not color more. This pigment can be diluted quite well with water with a little liquid black soap. This pigment is 94% natural and is made in France.