Telling silk from viscose
Genuine silk is strong, warm to the touch, and its lustre shifts as you change viewing angle. Viscose feels cool and slightly heavy, shows every footprint, and can leave a faint chalky residue on damp fingers. A single fibre burn test from the underside settles it: silk smells of burnt hair and forms a brittle bead, viscose smells of burning paper and leaves soft grey ash. Sellers use names like art silk, bamboo silk and banana silk, all of which mean viscose.