Rings by Donna Barry This beautiful silver & 18ct gold ring measures at 11mm width x 0.7mm depth. Features Primary Material : silver Other Materials : 18ct gold (yellow) One of a Kind : No Metal : 18ct gold (yellow) and silver Hallmarked : No Cleaning InstructionsSilver dip, then rinse and brush with a soft tooth brush with hot water and fairy liquid. For best results, dry ring with a hair dryer. This will avoid any silver dip residue or water stains.