Purely Silk 100% silk threads are considered essential for stringing fine gemstone beads and pearls. The quality of Purely Silk thread is comparative to other renowned silk threads for jewelry-making. Easily knottable for producing professional results, Purely Silk thread is durable enough to withstand the abrasion of pearls, glass beads and gemstones while remaining smooth with a soft sheen. Thread may contain an occasional splice in the length.