Gorticelli Filo Silk is also extensively sold in skeins; eachskein bears a guarantee tag branded Corticelli. Buyersshould look, for this name on spools and on skeins. 87 Corticelli Etching Silk SIZE No. 500. WASHING COLORS. (Called also Outline Embroidery Silk and Lace Embroidery Silk.) … This is a medium size of silk, finer than EE, and suitable for outline work or etch-ing. It is used by the best needle workers in connection with the slacker twisted silks,affording a pleasing contrast and producing more artistic work. It is also welladapted to Lace Embroidery or Honiton work. Each…