The Material Is Stainless Steel Durable And Strong Weld Chain. All of Them Plated 14K Real Gold Will Not Fade, Hypoallergenic and Nickel Free, Health and Your Family. The necklace is made of titanium steel alloy, which has the advantages of no deformation, no discoloration and waterproof for a long time. Beautiful appearance, multiple colors to choose from, good corrosion resistance of titanium steel, no harm to human body, so you can wear it with confidence..syi