Vintage Geometric Black and Clear Stone Silver-Plated Pin Brooch

vintage brooch featuring a geometric design with various black and clear stones set in a silver-tone metal. The brooch has a rectangular shape with an irregular edge created by the staggered arrangement of the stones. The stones are of different shapes, including oval, square, and round, and are set in individual compartments with a textured, hammered-like finish on the metal surrounding them.