For your consideration is this pretty Jezlaine pin. It has a lovely open work heart design. Jezlaine was the mark of Sunstone. Circa 1980s with a nice patina. The pin is marked on the right back ( hard to see) Jezlaine and sterling on the left back.
It measures 1 and 3/8 inches by 1 and 3/8 inches.
Excellent, fully functioning condition.