An unstandardized commercial name that has been used for cobalt ultramarine, cobalt blue, and imitation cobalt blue. The name originally was given to an inferior grade of cobalt blue made by a process developed in 1777 in Germany (Mayer 1969).
R. Mayer, A Dictionary of Art Terms and Techniques, Harper and Row, New York, 1969.
Sources Checked for Data in Record
- Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)