This is an antique Victorian or Edwardian brooch with a large pink glass or paste stone. It is signed MKN. The brooch has a C clasp and it appears to have something written on the clasp but I cannot read it. It measures 1-1/2 inches wide and 1 inch tall. The stone is prong set. The brooch is in very good condition but may need cleaning or polishing. Please let me know if you have any questions. Thanks for stopping by.