This handicraft is unique in that it is only produced on Amami Oshima island. Oshima Tsumugi silk fabric has a history of some 1,300 years. The cloth is dyed using a solution derived from the Japanese Hawthorn tree. The threads are then soaked in iron-rich mud to produce its distinctive dark, black sheens. The fabric has long been used in the production of beautiful and distinctive kimonos.