This is as difficult as it sounds the filament is so fine that it is all but invisible to the human eye. China once held a monopoly on the silk industry. It then spread to Korea, Japan, India and Africa, where caterpillars of different species feed on oak leaves, castor oil plants, fig leaves and artificial diet. Some 35 countries now produce raw silk with China still producing half of the world's supply. As one might expect, the production of silk fluctuates constantly due to weather, diseases and politics.
Japan is the second largest producer, as well as the number one consumer of silk.
Paraguay, South Africa, Romania, and especially Brazil which produces a high quality silk. All rights reserved. All trademarks or registered trademarks are copyrights of their respective owners.