A vintage Native American 1 1/2 inch long pin with a pretty turquoise stone set between two etched or stamped rolling logs. Some people call them swastikas, but to the Navajo the symbol represents friendship and goodwill.
The fastener is a C clasp. This pin is made of silver, but it may have a lower silver content than sterling. It's unmarked and in very good vintage condition. The stone is a bit more blue green than it appears in the photos.