Turquoise background with machined decorative stripes and rows of tiny chains or circles. In the center is a purple flower with green leaves, all in cloisonné method of enamel. Covered in transparent turquoise enamel (Guilloche method). On back of this pin is a round hinge and safety pin c clasp. STERLING is stamped on back . There is also a trademark (S inside an O inside a C) for Sweet & Son, Inc. of Attleboro, MA (1915-1934) 1" long 3/16" wide