Inorganic, Natural Earth
|Colour Index ||PG 23 |
|Drying Speed ||Average |
|Opacity Covering and Tint Power ||Semi-Transparent |
Very Low Tint Power
|Lightfastness ||Excellent |
|Oil Content ||Average, Linseed |
|Toxic ||No |
|Conforms To ||ASTM D-4236 |
Green Earth, a complex of Ferrous Silicates in Aluminium and Magnesium clays, is one of the few naturally occurring inorganic pigments still to be offered by colourmen.
It has a very soft texture with very low Tint Power, beloved of portraitists who use it as a glaze over Alizarin Crimson hues.
Some makers add other pigments in order to give it a spuriously enhanced Tint Power which depletes these qualities, I do not.
A popular trick is to use a little Terre Verte under the noses of portraits to get red coloured cheeks to play up as a complimentary colour!