VINTAGE GOLDTONE NECKLACE WITH BLACK STONE DETAIL

This beautiful necklace was my grandmother's ❤ I likely will never wear it as it's not my style, but someone may love it. There's no flaws, no tarnish, no kinks, she's perfect. Approximately 31 inches in length. Could possibly be doubled up and worn as a choker as well. There aren't any stamps or marking indicative of metal or maker. However it's obvious that the quality is great and not cheap, the necklace is very old and has held up throughout time. I am guessing a gold plate and the black stones aren't plastic, perhaps glass or onyx...? Don't hesitate to ask questions prior to purchase, all of my items are closely recorded before and during packaging for my buyers protection as well as my own 🖤