Tussar Silk

Tussar silk (alternatively spelled as Tussah, Tushar, Tassar, Tussore, Tasar, Tussur, Tusser and also known as (Sanskrit) Kosasilk) is produced from larvae of several species of silkworms belonging to the moth genus Antheraea. 

Tussar silk is considered more textured than cultivated Bombyx or "mulberry" silk but it has shorter fibres, which makes it less durable. It has a dull gold sheen.[2][3] As most of the cocoons are collected from the forest, it is considered by many as a forest product.