Downton Abbey silvertone segment necklace with dark gray iridescent rhinestones

This is a signed Downton Abbey dainty silvertone chain necklace featuring three small triangular filigree style segments with sparkly iridescent dark gray rhinestones. There is a metal Downton Abbey brand tag at the end of the extender. The clasp is a lobster claw. She measures 15 inches long plus a 3 inch extender. Very good pre-owned condition.