Light Peach Plain Raw Silk Fabric. Continuous filaments of silk, with no twist, which have been reeled from cocoons but are unprocessed and comes with a slub effect. Raw Silk has a nubby feel with a low sheen. It resembles cotton in surface texture and sews easily. When these short fibers are spun into yarns, the resulting yarns have occasional slubs and specks that add to its appeal. Nubs vary between different weaves. Sportier in appearance, Raw Silk has the look of hopsack but is much softer.