To me, the flowers individually look like lilies. Where they all come together in the center may look like one flower but, may, in reality be a representation of the individual buds gathered together in a bouquet or corsage. I've seen broaches that had pins as well as loops so you could wear them as an amulet or a broach. I allow that the strap across the back and curvature of the strap and the front panel suggest a slide for hair, scarf or sash but the two small holes or spots might be where the pin was fastened to the blackstrap. The lily would be a spring reference perhaps?
Either way, nice find of a beautiful piece! The filigree background suggests a possible Eastern background. Filigree like this is darned hard to do. It would have taken many hours to make the original wax model for this, by hand. The Russians and Eastern European folks do the best I've seen.
I'd recommend you roll it on a stamp pad and then a piece of stout paper over a rubber pad of some kind. This will give you a more two dimensional image of the representation. Then immediately clean the face with denatured alcohol and a tooth brush. Show us what comes out, please?
Congrats and best wishes!-----------Phil