Beading Cord has been popular for this craft for centuries. It is a silk cord that allows you to knot anything from pearls to gemstones. Because it is so stretchy, it can become difficult to work with because you cannot see your work through the holes. Beading cord is available in a variety of colors and sizes. Beading Cord, unlike beading thread, is not very strong. Because of this, it should only be used for stringing on beads and findings until the jewelry is finished. You can use it to attach a finding or bead to another, but should not use it to chain your pieces together.