You can buy a gold cleaner to clean it. Pour the gold cleaner into the container, and then put it into the gold necklace. Try to cover the gold necklace with gold cleaner, soak it for a while before taking it out, rinse it with clean water (running water), and then wipe it with a soft cloth.

2. Toothpaste cleaning (applicable to gold necklaces and 18K gold necklaces)

Toothpaste is a neutral cleaning substance. Ordinary toothpaste will not react chemically with gold as long as it is not thick or white. Put the gold necklace in a container, soak it in clear water for a while, then dip some toothpaste in a soft brush or jewelry brush, then start to wipe the gold necklace, finally rinse it with clear water (running water), and then wipe it with a soft cloth. If it is not particularly clean, you can wipe it a few times.

Matters needing attention in the preservation of gold necklace

1. The hardness of the gold necklace is low, so when doing rough work such as handling and cleaning, or strenuous exercise, try not to wear the gold necklace, so as to avoid the breakage and damage of the necklace caused by collision and pulling during the process.

2. Don't put all kinds of jewelry in the same drawer and jewelry box at will, because all kinds of gems and metals have different hardness, which will lead to loss due to mutual friction.

When wearing a gold necklace, pay attention to the surrounding environment. Don't wear it when there is too much moisture or dust, because moisture and dust will darken the color of gold.

4. When wearing clothes, especially sweaters and sweaters, be careful not to let the thread of clothes get entangled in the necklace and break it. Remember to take off the gold necklace before going to bed, so as to keep its own smoothness.