Stainless steel18k gold platedWaterproofHypoallergenicWeight:9.51g   follow me IG valent_accessories They are stainless steels and gold details, we have added 18K gold plating.This means that the color will last a long time (at least a few years). It does not discolor and has no scratches. All our products are made of stainless steel, so they are waterproof! All products are free of nickel, lead or cadmium... which makes it hypoallergenic.