This is a 1940s Retro figural of a bunny rabbit. The company who made this is H. Pomerantz, although this is unsigned. He also made a rabbit with diamond shaped earrings as well as a mosquito, among others. Herman Pomerantz was in the jewelry business between 1920 and 1960 in New York.
This is a rather large and chunky pin. It has a gold tone wash and there are some light scratches on the finish which are primarily seen with a jeweler's loupe. His tail is white metal with clear rhinestone paving. His ears are purple. He measures 2 7/8" by 1 5/8". Overall, the pin is in good vintage condition and it is a sought after figural from this Golden Age of vintage costume jewelry!