What is natural silk?
Natural silk fabric is mostly composed of fibroin which comes from cocoons produced by insects. Many insects can produce the silk fibers and the proteins that are needed for weaving. However, the Mulberry silkworm have produced some of the best results. In most cases, silk is taken directly from their cocoons. What is natural silk made of? Silk is a natural fiber produced by insects as a material for their nests and cocoons.