Cufflinks by Sarah Packington clear acrylic square section bars with scored turquoise lines. On a polished silver swivel fitting. Features Primary Material : acrylic Other Materials : silver Fitting Type : hinged bar Dimensions (mm) : 20x15x15 One of a Kind : No Metal : silver Hallmarked : Yes Cleaning InstructionsClean with a 'silver cloth' or detergent and mild detergent.