Massive Vintage Zuni Turquoise Rosette Wheel Pendant Pin Sterling Silver

Massive hand-made sterling silver pendant pin. It is Zuni and is set with natural turquoise petit point stones in a stunning rosette wheel design. C. 1950-1960. No hallmarks. Tarnished. Acid tested. Brought to me from Arizona. 

It measures 3 1/8" in diameter. It has a bail for a chain on the back and a pin with locking clasp. Stones are accented with large hand dropped raindrops. These photos don't do it justice. It is a monster!