Silk is a natural protein fiber majorly made out of fibroin and is obtained from particular insect larvae. Silk is majorly produced by the larvae of insects that are in the process of completing metamorphosis, but a few insects like web spinners and raspy crickets produce silk during their lives. The glittering surface of silk is due to the triangular prism-like figure of the silk fiber that helps silk cloth to refract incoming light at many angles, ... Read more