Earrings by Josef Koppmann The earrings are hand made with sterling silver overlaid with 24ct gold. There is a silver stud fitting at the back. Features Primary Material : 18ct gold and sterling silver Length (mm) : 15 Fitting Type : Post Dimensions (mm) : 15x15x1 One of a Kind : No Metal : 24ct gold and sterling silver Hallmarked : Yes Wire Material : sterling silver Cleaning InstructionsThe earrings are best kept clean by rubbing and brushing gently under running water with bicarbonate of soda. Do not submerge in water for long periods.When not worn store in a box with acid free tissue paper.