Seen in the new book by Ann Pitman, Juliana Jewelry Reference, DeLizza & Elster Identification and Value Guide, on page 176, this pin is valued at $175 - $200.
This pin has large tear drop and round shaped hematite stones surrounded by AB rounds and topaz rounds & marquise in a double layer round brooch.  Some of the stones are open backed and some are closed.  The setting is goldtone plating, there are figure 8's and a one piece pin setting.  In excellent vintage condition.