Art Deco Bow Brooch

This is I believe an Art Deco Bow Brooch, it belonged to my grandmother, several years ago I inherited it from her. Ive never worn this brooch and I dont remember my grandmother wearing it, although she did wear a number of pieces I inherited from her.

It might be made out of pot metal ? Not sure ? I dont have any other information about this brooch.

It is pretty, all stones present. It is somewhat heavy. It does not have any markings on the back. The coloring is good, considering the possible age.

Let me know what you think about this brooch ? and if you have other information.