An obsolete organic colorant thought to have come from gallstone of an ox. Gallstones were ground into a golden yellow powder then mixed with gum arabic for a transparent yellow paint. By the end of the 18th century, a substitute made from quercitron yellow was sold under the name of gallstone. Both colorants were fugitive and rarely used in paints.
Synonyms and Related Terms
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)
- R.D. Harley, Artists' Pigments c. 1600-1835, Butterworth Scientific, London, 1982