Brooches by Donna Barry Designed and handmade by Donna Barry. Features Primary Material : silver Pin Type : pin Dimensions (mm) : 33 x 33 x 3 One of a Kind : No Metal : silver Hallmarked : No Cleaning InstructionsRemove the pin stopper and place the pin in silver dip and leave for just a few seconds. 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 dip residue or water stain.Polish up pin stopper with silver cloth.