Earrings by Josef Koppmann These earrings are hand made with sterling silver overlaid by 24ct gold and have aquamarine cabochan navette. There is a silver stud fitting at the back. Designed and handmade by jewellery designer Josef Koppmann. Features Primary Material : sterling silver Other Materials : 24ct gold and aquamarine Length (mm) : 16 Fitting Type : Post Dimensions (mm) : 26x11x5 One of a Kind : Yes Metal : 24ct gold and sterling silver Gems : aquamarines 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.