Vintage Genuine Blue Stone and Crystal Necklace On Chain Gemstone

Vintage genuine blue-ish, greenish stone beads and cut crystals on chain necklace. I am not sure what kind of stone this is. Genuine stones will have natural inclusions. The largest bead measures approx.1/2 ". The necklace is 20 " long. Really nice shape!

At the very end of the necklace, It looks like the chain was hooked on to the jump ring by the 2nd link instead of the first link. No big whoop! See last photo. You can always open up the ring and re-hook it on to the first link.