Earrings by Josef Koppmann These 18ct yellow gold earrings with amethyst are designed and handmade by Josef Koppmann. Features Primary Material : 18ct yellow gold Length (mm) : 38 Fitting Type : Hook Dimensions (mm) : 38x8x18 One of a Kind : Yes Metal : 18ct yellow gold Gems : amethyst Hallmarked : No Wire Material : 18ct yellow gold 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.