The origin and development of Ultramarine as a general pigment - including the manufacturing process - has been described in another publication, ‘Ultramarine – The Eternal Pigment’. This explained how, having been in use for thousands of years, Ultramarine has found its way into many and varied applications, each of which has its own demands on pigment properties. What is required of an Ultramarine pigment used for colouring plastics? Click here for more...