Sterling Silver and Turquoise Petit Point Rosette Pin / Pendant

Vintage Southwestern sterling silver rosette wheel pendant / pin. It is set with petit point turquoise. It measures 1 1/2" in diameter. Pin has locking clasp. Bail for chain is on the back. Weight: 8.3 grams. Marked sterling. No Zuni hallmark. Brought to me from Arizona. 

Need a chain? I have a whole collection of vintage sterling silver chains HERE.