Grape seed black is finely ground material obtained by carbonizing (charring) grape seeds. The pigment is very stable and lightfast as are all carbon blacks. and there are no known incompatibilities with other pigments.
PBk 8, CI 77268Probably a back-formation from graper “steal; grasp; catch with a hook; pick (grapes),” from a Frankish or other Germanic word, from Proto-Germanic *krappon “hook,” From Online Etymology Dictionary
Grape seed black is finely ground material obtained by carbonizing (charring) grape seeds.
Pliny mentions in his writings that the black pigment of antiquity was prepared by charring of grape seeds. Later they made charcoal from wood or used coal or soot directly as a pigment (1).