Earrings by Josef Koppmann The 24ct Gold and Silver Earrings are designed and handmade by jewellery designer Josef Koppmann. Features Primary Material : 24ct gold and silver Fitting Type : Post Dimensions (mm) : 14 x 9 x 4 One of a Kind : Yes Metal : 24ct gold and silver Hallmarked : Yes Wire Material : 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.