RARE vintage choker necklace copper shell

Rare vintage find ❤️ In the process of cleaning closets, comes the process of letting go of MEMORIES. This isn’t a bad thing in my case, but this well loved choker/necklace/statement piece should belong to someone else. I’m describing it as copper bc I’m not actually sure. It is a thick, sturdy, & very well made necklace that has been WELL cared for. The square accents across the front appear to be made of some type of shell (abalone perhaps?) with a shiny pearl type look. Perfect accessory 🎀