Barneys New York's round cufflink and shirt stud set is crafted of polished sterling silver set with abalone. The elegant set features a black enamel border. Includes two cufflinks and four shirt studs. Black enamel. Abalone. Polished sterling silver. Cufflinks: 16mm face diameter. Studs: 10mm face diameter (approximately). Cufflinks and shirt studs: Button back.