Trying to figure out a way to dye marco rocks, sounds like its a pretty large trade secret how they are doing it on their own purple version. Curious if its just concrete pigments, any obvious issues with iron oxide?
Iron oxide pigment is a kind of pigment with good dispersibility, excellent light and weather resistance. Iron oxide pigment mainly refers to the pigment with iron oxide as the basic material.
Iron oxide is the second largest inorganic pigment after titanium dioxide, and it is also the first largest color inorganic pigment.
Iron oxide is wide chromatography, many colors,non-toxic, excellent coloring and application properties, UV absorption and other properties.