Kosa (Tussar) silk has its roots in Bhagalpur, India. The  silk weaving industry, in this region which is over one hundred years old, has almost thirty-thousand weavers working on  hand-looms.

Kosa silk is produced from silk cocoons of various species of silkworms. These worms are found in the wild forests of India, and are very difficult to find. From finding the cocoons, to separating the silk strands and dyeing the treated fibers, the process of making Tussar silk is very extensive. These sarees tend to have a more earthen aura and a very organic mix of patterns and colors.Tussar silk sarees have a subtle golden sheen which serves as an elegant background for embroideries, floral patterns, folk designs, and stonework.