Clyde Chain Necklace16 18 sterling silver chain or gold fill chain, 3mm wide To prolong the life of your gold plated and gold filled pieces, we recommend removing your jewelry when doing the following: swimming (chlorine and salt can affect plating over time), showering, or washing your hands applying lotions, oils, perfumes, etc. cleaning, especially with harsh chemicals rings when getting a manicure and necklaces earrings when having hair treated Do not use jewelry