Product Description An intense deep black, Bone Black has an even tone and is perfect for a variety of watercolour applications including glazing. Use this colour full strength for hand-lettering and calligraphy projects, for dramatic backgrounds, grey-scale works, architectural studies, and for interesting line compositions. Artist Notes: Bone Black is wonderful for glazing thanks to its semi-transparent nature and can be used to create layers full of depth and complexity. Paint Makers Notes : The quality of Bone Black can be determined by how dark it is in colour, and by the absence of impurities within the pigment itself. Transparency: Semi-Transparent Staining: Staining Granularity: Semi-Granular Pigment Number: PBk 9 Pigment Type: Synthetic Inorganic Pigment Composition: Amorphous carbon Lightfastness: I – Excellent Toxicity : Non Toxic