The pigment, Sienna, is named after the city of Siena in Tuscany, Italy, where the pigment-rich earth was first sourced. The pigment is a type of iron oxide clay, naturally containing both iron and manganese.
Raw sienna is a yellow-brown earth pigment. When heated (calcined), it transforms into burnt sienna—a deeper, reddish-brown with warm undertones. The heat intensifies the iron oxide, giving it that beautiful rusty hue.
Burnt sienna has been used since prehistoric times in cave paintings such as the famous Lascaux paintings.
Made from natural iron-rich earth, it’s considered non-toxic and environmentally safe.
50g pigment in 110ml jar
Origin: France
- Chemical name: Natural iron oxide
- Color Index: R102
- Bulk density: 830 g/l
- UV resistance: Excellent
- Colouring power: Very good