Vintage Emerald Green Rhinestone Starburst Brooch

Found this really pretty vintage-style brooch. It has these deep emerald green stones in a starburst or flower pattern with clear rhinestone accents around the edges. It's got a nice weight to it and looks great on a coat or a scarf. Not sure of the exact era but it has that classic mid-century costume jewelry vibe. Some light wear on the back but the stones still have plenty of sparkle.