This is an Art Deco sterling silver pendant with prong set marcasites and a large pink glass stone. The only mark it has is Sterling on the back but I believe the stone might be Czech. The pendant measures 1-1/4 inches long and 1-1/8 inches wide. The pendant is in very good condition with no problems that I can find. It does have an age patina and may need cleaning or polishing. Please let me know if you have any questions. Thanks for stopping by.