Bullion has been used for centuries to add rich texture to hand embroidery.  It is a traditional embellishment for ecclesiastical, military, ceremonial, and formal attire. It is made from metal wire which is coiled into a spring-like spiral.  It is typically cut into short pieces, using a sharp scissors, and stitched into place like beads, with the needle passing through the spiral’s hollow center.  It’s easily stretched beyond its elastic limit, and after that, will not return to its original shape