Vintage Design Black Mystery Bracelet True Deadstock Retro

This beautiful retro/vintage piece LOOKS to be a Marcasite Black Onyx Bracelet. Exact age unknown. BUT I HAVE NO IDEA how to verify if it is Marcasite so I am selling as COSTUME JEWELRY made to resemble the real deal. MATERIALS ARE UNKNOWN NOT SELLING AS MARCASITE NOR ONYX. Selling as costume jewelry. It has weight to it but exact MATERIALS UNKNOWN! I don’t have the time to verify the stones. New without tags I believe as no tags were included. see pics! All pics are taken by me, so all rights are solely my own. Please allot for color variations due to many factors. These items are part of my Aunt's Inventory. My aunt was an ER RN that retired as a Night time System Administrator for the hospital! She spent her whole life helping and caring for people. I am helping her by using my platforms to sell. I do all packing, shipping, photography, promoting & selling! ALL proceeds go Directly to her. I ship same day. All items come from a Kitty Friendly home! All jewelry items are mostly new stored in boxes or in packs regardless of age. ALL items will be new, modern, retro, vintage, antique or artesian hand crafted. Please Read full description carefully. Please contact me with any questions or concerns.