Unusual Navajo Silver and Turquoise Pin

This is a handsome pin.  It has three pieces of Blue Gem turquoise in the center of the pin with an oval stone in the center and a smaller stone on each side. The turquoise sits in an open oval with stamped "raindrops" along the top and bottom of the oval. On each side of the pin are three stamped feather-like pieces. This is an unusual piece.

L. 2 ⅝"; W. 1 ¾"