Tussar silk produced in Madhya Pradesh, is known by its Sanskrit name 'kosa'. Raigarh and Champa are important centres for tussar silk sarees and fabrics, where the weaving is done by the Devangan community. These sarees radiate a natural brilliance due to the fibre used. Brocade work is done with Zari to give them an ornate look. The palla and borders of the sarees are woven with thread, coloured in the Ikat style to give it a designer touch.
Special weaving is done using coloured threads (red and brown) of the 'Aal' (madder) tree roots.