Rings by Donna Barry This lovely silver fused ring by Donna Barry measures at 8mm width x 0.7mm depth. Features Primary Material : silver One of a Kind : No Metal : 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.