Muga Silk Assam Golden Shimmering Tradition

Muga silk (from Antheraea assamensis, the muga silkworm) is the world's only naturally golden silk and is produced exclusively in Assam, making it one of the rarest and most geographically specific luxury textile fibers on Earth. The muga silkworm feeds on the leaves of the som (Machilus bombycina) and soalu (Litsea polyantha) trees, which grow in the Assam valley's subtropical humid forest, and cannot be reared outside Assam's specific climate conditions of high humidity and temperature. The characteristic golden color of muga silk comes not from pigmentation (the cocoon fiber has a natural deep amber-golden sheen) but from an structural protein arrangement in the sericin coating that preferentially reflects the golden part of the visible spectrum. This color does not fade; historically documented muga silk garments 50–100 years old retain their original golden sheen. Muga silk rearing is a household livelihood practiced predominantly by Assamese women across Kamrup, Morigaon, Nagaon, and Sualkuchi (the silk weaving capital) districts. A rearing cycle takes 28–32 days; 3–4 cycles are possible per year. The muga mekhela-chador (the traditional two-piece Assamese women's garment) is the primary use of muga silk and is an obligatory garment for Bihu festival and marriage ceremonies. GI certification for Assam Muga Silk was granted in 2007. Premium hand-woven pure muga mekhela-chadors can sell for Rs 30,000–1,50,000 at Sualkuchi weaving cluster. Muga silk is increasingly used by international fashion designers for its unique golden luster.