vtg Mourning Choker Statement Necklace

vintage Cabot Interchangeable Mourning Choker Necklace Thick shiny black twist rope cord looks like a lock of twisted hair Could really be hair. Could really be silk. Not sure. Detaches from two-toned pendant Pendant is signed CABOT Center of pendant looks like mother of pearl or some type of moonstone agate 🤷🏽‍♀️ I know nothing about vintage estate pieces, but I will try to answer any questions. Pictures are part of description Happy to accept considerate offers Happy to block lowballers too estate natural stone silk rope mourning victorian grungecore goth gothic costume jewelry alabone bridgerton