Here for your consideration is an inlaid mother of Pearl stick pin. I have two available and selling each. The top round part tests for sterling silver and the stick pin does not but may be plated silver. The silver is left unpolished and does have a patina. There is also a pen mark on the back of them for some reason. The pin measures 2. 5" long and the heart is 1/2"

This item is sold from a vintage boutique in Stanton, Nebraska.