I want to first say this is a heavy piece. That is why I believe its either bronze of brass with a bronze finish. The brooch is not attracted by a magnet. All of the rhinestones on this piece are acrylic. The center oval rhinestone is surrounded with amber navette rhinestones. The amber navettes are cabochons and the center oval is faceted. The brooch measures about 1-3/4″ tall by 2″ wide. Small flaw on face of center rhinestone. Please examine the photos, they describe this listing better than any words. On iPhone, tap READ MORE for detail and photos.