Learn the correct way to knot pearls on silk cording in this class. Knots between pearls on a strand prolongs the life of your pearls, as they do not rub against each other. You can use this same technique for many other designs. Instructor, Robin. Bring or purchase for class: Pearls (freshwater or glass), silk cord in the color of your choice, clasp of your choice, 2 bead tips (clam shells)