This is a chained yarn, meaning it was not spun, but created by taking a thread of silk and making a bulky yarn by chain stitching it. So one can literally pull the strand width-wise and it will be a lacy, wide ribbon. This is how the trendy ruffle yarns all work, only they are on a very big scale. I have knitted this shawl using the technique of putting the needle through a few loops of the chain, then pulling a few loops of the chain through. So it is a little bit of a ruffle. It's quite bulky but light, because the silk is so airy. I like the look of the wavy surface which is not quite ruffly.