New vintage Jade minimalist pendant necklace

New vintage Jade minimalist pendant necklace Minimalistic treasure! 😀💚 Diamond shaped pendant with a jade piece inside a gold tone metal frame. Opaque stone but Dark inclusions can be seen. 18 mm square x 2 mm thick 18” shiny flat cable chain +1 mm thick New vintage c. 1970s. Genuine B.C. Jade / Nephrite. Probably gold plate. No visible hallmarks!