This is a pair of gold tone cufflinks. The tops have inlaid tiger eye, hematite and black onyx. I cannot find any markings on the cufflinks. The tops measure 5/8 inches by just under 1/2 of an inch. The cufflinks are in very good condition and do not appear to have been worn. I have not cleaned or polished them. Please let me know if you have any questions. Thanks for stopping by.