Very unusual. Perhaps made for the wife of a soldier as there was a famous Scottish regiment called the Cameron Highlanders. It is from around late 1800s I would think, and in very good condition. It comes with the original box marked CAMERON, and the brooch has a little mark which looks like P.M.S. It is four inches long. These are the colors of the Cameron tartan and the brooch has a little faceted Cairngorm stone inserted in the top piece (these stones come from the Cairngorm mountain range in the north of Scotland).