Vintage Green Beaded Necklace, Boho Hanmade Necklace

This is a beautiful vintage beaded necklace. It appears to be handmade. It's in really good condition. I don't see any missing beads. The beads are a vintage plastic or resin. They have lovely color variations in a vibrant green. It has a twist clasp and measures about 21.25 inches. I would guess it was made in the 70s but it could be earlier.