Synthetic Oxides – Pigments made from oxidized metals and valued for their stability. For example oxidized Iron yields shades of red, yellow, black, and brown. Chromium yields shades of green and Titanium gives us white. Synthetic oxides are available in either powdered or liquid form.
Organics – Pigments made from organic compounds and valued for their bold tones. For example, carbon black is perhaps the most common organic pigment used in the production of concrete. However, these pigments are not recommended for all applications as they are comparatively unstable and do not meet lightfast (fading) requirements.Concrete pigments are classified into two groups – synthetic oxides and organics.