Burnt Sienna

Wikipedia: Sienna, Italian: Terra di Siena, “Siena ground”, is an earth pigment containing iron oxide and manganese oxide. In its natural state, it is yellow-brown and is called raw sienna. When heated, it becomes a reddish brown and is called burnt sienna. It takes its name from the city-state of Siena, where it was produced…Read more Burnt Sienna