Diamond earrings should be cleaned carefully, with a mild detergent solution and, if necessary, a soft-bristled toothbrush. The detergent solution can be mixed with a mild, chlorine-free dish or hand soap and an adequate amount of warm water to allow the earrings to soak.
After the diamond earrings have soaked in the warm water and detergent solution, they can be lightly scrubbed with a soft brush, such as a soft-bristled toothbrush. The cleaner should absolutely avoid using metal brushes, steel wool or other abrasive cleaning products that can scratch the stone and the metal setting. The earrings should then be carefully rinsed under clean water and dried with a soft cloth.