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New 18k gold plated necklace Material: stainless steel Q&A 1. What is the material? - It is made from 18K real gold filled. Stainless stain is nickel-free, zinc-free and hypoallergenic. 2. Does the color tarnish? - This material is water-resistant. It won't turn your skin green. To keep the color lasting longer, I would avoid wearing it to shower or swimming.