Earrings by Donna Barry Designed and handmade in Edinburgh by Donna Barry, these beautiful silver studs are easy to wear and can be dressed up or down for any occasion. Features Primary Material : Sterling silver Fitting Type : Post Dimensions (mm) : 15 x 13 One of a Kind : No Metal : Sterling silver Hallmarked : No Wire Material : Sterling silver Cleaning InstructionsPlace earrings in silver dip and leave for just a few seconds. Leave longer if badly tarnished. Then, rinse well with warm water. Using a soft toothbrush and fairy liquid, brush the silver all over. Rinse thoroughly and dry using a hair dryer. This will reduce any silver dp residue or water stain.Or for a more enviromently friendly method, place earrings in a bowl wih some barcabontate of soda, a scrunched up ball of tin foil and hot water. Dry using hairdryer.