For your consideration is this nice circa 1930s necklace. It has irregularly shaped blue glass stones ( to look like chunks of lapis I believe ). The center stone has a nice brass filigree setting. The other wonderful Art Deco links are possibly silver plate.
The necklace measures 16 and 3/4 inches when clasped.
It is in excellent condition other than having a very uneven patina including on clasp that is fully functional.