Earrings by Josef Koppmann The earrings are hand made with 18ct Yellow Gold. Designed and handmade by jewellery designer Josef Koppmann. Features Primary Material : 18ct yellow gold Other Materials : smokey quartz Length (mm) : 30 Fitting Type : Hook Dimensions (mm) : 30x10x10 One of a Kind : Yes Metal : 18ct yellow gold Gems : smokey quartz 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. When not worn store in a box with acid free tissue paper.