Vintage hand-carved natural spinach green nephrite jade bead necklace

This is an amazing vintage genuine / natural hand carved spinach green nephrite jade bead necklace with a gold tone clasp. The beads are 8.2 to 8.3 mm in diameter and each individual bead as been hand-carved and knotted with silk/ satin. It is a much older necklace since these bead are no longer hand carved. The beads have the most desirable saturated spinach green color seen in nephrite jade. The clasp doesn’t have any patina and I’m not sure if it is gold plated or even solid gold, but lm selling it as gold tone metal since it’s not stamped. The necklace is 18 inches long and weighs 40.8 grams. In excellent vintage condition.