Natural Hubei barrel shaped turquoise bead solid sterling silver necklace

This is a superb genuine / natural Hubei barrel shaped turquoise bead solid sterling silver necklace. The beads are about 4.65 mm wide and 6.57 mm long. They are individually hand knotted with green silk. The necklace is 16 inches long and weighs 9.9 grams. The clasp is made of solid sterling silver and it’s stamped 925 on its catch. In excellent vintage condition.