This is a wonderful vintage Art Deco celluloid and rhinestone pendant necklace on a fancy silvertone chain. The pendant is a large black celluloid drop with an etched design in white decorated with rhinestones and one faux pearl. It is suspended from a very interesting chain which is made up of fancy links and looks like it is made of aluminum or something similar. It fastens with a spring ring catch. I couldn't get a good picture but the jump ring is marked Made in Germany which dates it to before WWII.
The necklace measures 18 inches and the pendant measures 2 inches by 1 inch. It is in very nice condition. The finish is worn off of the pearl and there is a little residue which looks like it might be dried glue on the back of the pendant but this is not very noticeable.