faux coral brooch, Arts & Crafts Vintage 1930's Pin with Nouveau Design Brooch

This is a unique vintage 1930's brooch that is made of (what appears to be) bronze, although it looks like silver over brass. I\u2019m not sure honestly. The \u201cstone\u201d is glass. The fun design is an arts and crafts style with a bit of machine age influence. It features a curved design which has been accented by a faux coral stone. An older piece, most likely made during the later arts and crafts movement of the thirties and forties. Unsigned.Measures 3-1/4" x 1 1/4".In very good condition. Clasp works properly and holds tight. It appears to have an old solder mark. Quite heavy, best worn on a sweater, coat or jacket., art nouveau brooch