Earth pigments are natural substances used to color a variety of materials, including paint, fabric, and ceramics. OCHRE, UMBER, SIENNA, and ocher are all earth pigments that have been used for centuries in art and decoration. OCHRE is a yellow-brown pigment made from clay and iron oxide. UMBER is a dark brown pigment made from clay and manganese oxide. SIENNA is a reddish-brown pigment made from clay and iron oxide. Ocher is a yellow-brown pigment made from clay and iron oxide. All four of these earth pigments are still used today in a variety of applications.