This necklace was made by hand in China. The jade pendants hanging down are 2 gloved hands. Above that are 4 green jade beads. There are 2 additional jade beads at the upper end of the necklace where you pull to tighten or loosen the choker. The necklace itself is made of black string that has been knotted by hand.  To Tighten the necklace, you need to pull on the beads at the back of the neck to tighten it. To loosen, pull in the opposite direction.