If the K-gold necklace loses its original luster due to stains or dust pollution, it can be put into diluted neutral detergent, cleaned with a soft brush and dried with a soft cloth, so that the stains deposited on the surface of the necklace can be cleaned and the luster and color of the K-gold necklace can be restored. It should be noted that because the hardness of K gold is not particularly high, it is necessary to use a soft brush when cleaning to avoid scratching the K gold necklace.

2. Send it to a professional institution for handling.

Because common perfumes, detergents, bleaches, sea water, etc. in daily life can easily lead to discoloration of gold ornaments, K-gold necklaces should be removed in advance when making up, cleaning or swimming. If the K-gold necklace changes color due to the chemical reaction caused by contact with these substances, the general cleaning method cannot be restored at this time, and it can only be sent to a professional jewelry maintenance institution for electroplating renovation to repair the original color of the K-gold necklace.