Cotman 21ml - Ultramarine
Ultramarine is a rich deep transparent blue. It was created by French chemist Guimet in 1828 as a synthetic but chemically identical replacement for the expensive pigment derived from Lapis Lazuli.
- Colour Granulating Staining G
- Colour Number 660
- Lightfastness (ASTM) II
- Permanence Rating A
- Pigment(s) PB29
- Transparency / Opacity T