Short answer
Satin is a weave construction—not a fibre type—where warp yarns float over multiple weft yarns (typically 4 over 1), creating a high-reflectance, smooth face and a dull back. While traditionally woven from silk, modern satin is predominantly woven from polyester or viscose filament yarns in Surat.
Satin is a staple fabric traded extensively across Surat's Ring Road markets:
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