Description Colour Index PG 23 Drying Speed Average Opacity Covering and Tint Power Semi-Transparent ƒ‚‚ Very Low Tint Power Lightfastness Excellent Oil Content Average, Linseed Toxic No Conforms To ASTM D-4236 ƒ‚‚ 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!
