Earrings by Selina Campbell Features Primary Material : sterling silver Length (mm) : 30 Fitting Type : Hook Dimensions (mm) : 42x10x10 One of a Kind : No Metal : sterling silver Hallmarked : No Wire Material : sterling silver Cleaning InstructionsSterling Silver can tarnish over time especially it has contact with certain chemicals, acidic food, cleaning agents and worst of all, chlorine, which can leave permanent marks. Silver should be kept dry so remove it before washing up, showering, bathing, swimming and when applying perfume. If possible store in a tarnish-free cloth or jewellery box. A silver polishing cloth is a useful item to remove tarnish and helps keep your jewellery lustre and shine.