This is most unusual pin by Star I have come across so far. It has a brushed gold star-shaped modern setting with a large two colored clear with a swath of green stone in the center. The stone measures 1 1/2 inches by 1 1/8 inches. Star produced jewelry from the 1940's-1960's so I think this is a 1960's design. It is quite eye catching!
Condition: In every good condition with a little bit of plating loss, one chip on the edge of an inside facet. The hinge is a little crooked but it works well.