Simply Silk Beading Thick Thread Size C Black 0.0108 Inch 0.27mm Spool 310 Yards 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 Purely Silk??????? thread is comparative to other renowned silk threads for jewelry-making