Unsigned but appears to be of Czech origin. Mesmerizing blue navettes with round, navette and octagon clear rhinestones, too. There are silver tone metal leaves accents.
Circa 1940's, there is some light foil loss to some of the stones. There are also a few small chips to some of the blue navettes. I included a photo of the largest one, the others are fleabites.
The pin measures 2 3/8 by 1.5 inches.