Hi Anne - what a very unusual vintage necklace! I have never seen a necklace quite like this before. The combination of rhinestones and the lighter greenstones flecked with gold are most unusual. Are the greenstones like a type of glass bead? Aren't they an unusual shape.
It looks like the clasp is also posing as one of the green focal stones? Where did you get this unusual vintage necklace, if I might ask?