Mulberry Silk is derived from the more pearlescent, natural white fibers of the farm-raised Bombyx mori silkworm cocoon. The basis of the diet is fresh mulberry leaves and determines the white color of the body of the insect itself and the silk fibers of the cocoon.
Tussa Silk silk yarn is also produced from the fibers of the silkworm Bombyx mori, but living in the wild. The wild silkworm feeds mainly on oak leaves, which also determines the color of the insect's body (green gray and even black) and the color of the fibers - less transparent, matte, having a warm shade from light to dark beige and gray-beige. Bleached Tussah Silk is bleached, but it does not have a pearlescent depth, and its white color looks more like bleached paper.
The thickness and length of the fibers are also different - Mulberry Silk is thinner (~ 8 microns), longer and more elastic, and Tussah Silk, due to a harsher habitat and natural inclusions of a larger diameter (~ 70 microns), is shorter and less plastic.
Silk yarn (combed or wild silk) is not unwound from a cocoon, but is produced using a technology similar to wool production - spinning yarn from fibers of the lowest quality, inside which you can see microscopic blotches of trees.
In the textile industry, all types of natural silk are in demand, and although mother-of-pearl Mulberry Silk is softer, slippery and smoother to the touch, while Tussah Silk is coarser and rougher, the rest of the fibers have the same physical, hypoallergenic and hygienic properties.
Date: Friday, 12 March 2021