This pin has been in our family for at least 60 years. I have no idea how or where it was acquired. We think the center stone is a faux piece of amber although it could just as easily be real amber. It has that apple juice color. The setting is marked Sterling and has a very dark silver patina. We believe this piece to be at least 100 years old. Very good condition with a safety clasp. It measures 2 1/2" x 1".