Thank you for contacting Mearto with your appraisal inquiry, and I apologize for the delay. This pin is made from cast semi-precious metal, with glass or enamel stones. The polish of the metal is well executed, and the stone settings are proper and sound. It is likely from the mid-late 20th century. Given the condition of this piece, and completed auctions of similar items, a fair market estimation is 50-60 dollars. Please reach out with any questions.

Bo Stuck