Simply Silk Beading Thread Cord Size FF Royal Blue 0.015 Inch 0.38mm Spool 115 Yards for Stringing Weaving Knotting Silk Thread 3 ply for beading weaving and knoting 100% silk threads are considered essential for stringing fine gemstone beads and pearls. Thread is comparative to other renowned silk threads for jewelry-making The quality of Silk thread is comparative to other renowned silk threads for jewelry-making