Stainless steel18k gold platedWaterproofHypoallergenicSize 32mmWeight 11.5 Follow me instagram @valent_accessories All our jewelry is made of stainless steel.For gold details, we have added 18K gold plating.18K gold plating. This means the color will last a long time (at least a few years).long time (at least a few years). It does not discolor and does notscratches.* All our products are made of stainless steelstainless steel, so they are waterproof!* All products are free of nickel, lead or cadmium.