Sterling Silver Hypoallergenic Ball Chain Necklace - 1.8 mm, 24" Sterling Silver Ball Chain Necklace is made of solid 925 sterling silver and will not cause skin discoloration. Hypoallergenic and perfect for everyday use. Larger than the standard military dog tag necklace, this chain can be used as a stand-alone neck chain or with a pendant. This strong neck chain has 12 lbs of tensile strength. Mens necklace can be cut to the desired length by using a wire cutter or sharp scissors. All sterling jewelry eventually discolor with time and use. When it interacts with elements such as sweat, oil, and atmosphere, it will naturally fade or turn black even. This sterling silver ball chain can be easily polished using a jewelry cleaner or polish cloth.