18k white gold diamond necklace can be washed? Do you want to go to the store and wash it with detergent if you accidentally get dirty? It is said that pure water is used or something. Ask for an answer! thank you This thing should be treated separately, depending on whether you want to wash it in your own home or in a brand store. Because your baby is a diamond necklace with 18K platinum, it should be treated differently. First, is your 18K platinum diamond necklace an ordinary gold necklace with a diamond pendant? Or 18K white gold diamond pendant chain? If you want to do it at home, prepare neutral detergent, warm water, containers and fishnet stockings. Because diamonds are oleophilic and hydrophobic, dirt will soon dissolve, and real diamonds will have different drops in water! This is also one of the methods to test the authenticity of diamonds. You can try it, it will have a different effect. Moreover, the diamond ornaments must be put into a net bag or fishnet stockings and cleaned under clear water. This is to prevent the main drill from loosening or the broken drill from falling off during washing. You're not afraid to take it off with a bag. But I personally suggest that you'd better go to the store of the brand you bought for cleaning and maintenance, because it is more professional and better. Jiahua Jewelry, Endora Diamond and Zhou Shengsheng have good after-sales service, so don't worry. It's best not to use detergent, toothpaste and other products to clean diamonds, which will not do any harm to diamonds, but will hurt your diamond holder. This is not good, because there may be a chemical reaction with the diamond frame.