I have a vintage necklace that is gold tone and has a gold U or moon shape with 2 large light green stones. They are a milky color like jade but could be costume jewelry. If you hold it up it hangs about 19 inches down. The stones or beads are just under 2 inches long each. I don’t see any maker marks or metal content markings so I don’t know what the metal is. See my other ads for jewelry, artwork, home decor and more.