Earrings by Josef Koppmann These 18ct White Gold earrings with Smokey Quartz Briolettes are designed and hand made by jewellery designer Josef Koppmann. Features Primary Material : 18ct white gold Other Materials : smokey quartz Length (mm) : 30 Fitting Type : Hook Dimensions (mm) : 30x10x10 One of a Kind : Yes Metal : 18ct white gold Gems : smokey quartz briolettes Hallmarked : No Wire Material : 18ct white 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. When not worn store in a box with acid free tissue paper.