It is about 2 1/2" long by 2" wide. Ashley and my research identifies that as the mark of Dorothy Ashley.
This has been in my collection since the early 90s. The item "Stunning and Rare Navajo Kachina Mask Multi-Stone Inlaid Pin/Pendant" is in sale since Thursday, April 19, 2018.
This item is in the category "Jewelry & Watches\Ethnic, Regional & Tribal\Native American\Pins, Brooches". The seller is "qtfishsells" and is located in Annapolis, Maryland. This item can be shipped to United States.