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. Designed and handmade by jewellery designer Josef Koppmann. Features Primary Material : 24ct Gold and sterling silver Other Materials : quartz Length (mm) : 29 Fitting Type : Post Dimensions (mm) : 34x16x16 One of a Kind : Yes Metal : 24ct gold and sterling silver Gems : quartz 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. (Use soft material on quartz) Do not submerge in water for long periods. When not worn store in a box with acid free tissue paper.