This stunning and unusual necklace took me quite a bit of research to find anything about! I posted it in jewelry identification groups and no one could identify it. We all thought the stones were just glass. However today I was finally able to identify the makers mark as Gazi Turkey. They always use real gemstones in their jewelry such as amethyst, chalcedony, onyx etc. so then I believe these are rare Etruscan yellow cats eye stones. I could be wrong, there are only 2 necklaces that I could find that have ever been sold online. More bracelets, and while they all look very similar nothing with this yellow color, but all gemstones.