1, in order to protect the luster of gold jewelry, you can coat it with a thin layer of nail polish.

2. If there is a black silver film on the surface, 2 grams of salt, 7 grams of baking soda, 8 grams of bleaching powder and 60 ml of water can be used to prepare a "gold cleaner". Put the gold jewelry in a bowl, pour the detergent, take it out after 2 hours, rinse it with clear water (preferably not hard water), bury it in sawdust to dry, and then wipe it with a soft cloth.

3. Ring with gemstones Roll a piece of cotton with popsicles or matchsticks, soak it in the mixed solution of toilet water and glycerin, scrub the border of the gem, and then polish the ring with flannel. Never scratch with sharp objects such as blades.

4, salt and vinegar mixed into a cleaning agent, use it to wipe pure gold jewelry, can make it durable.

5. Toothpaste wiping or scrubbing with hot rice soup can also restore luster.

6, 70% nitric acid and 98% sulfuric acid can be used in a ratio of one to three, but this is a chemical reaction to clean, which has a certain loss to gold.

Clean the black film of gold ornaments. Use 2 grams of salt, 7 grams of baking soda, 8 grams of bleaching powder, and 60 ml of clear water to soak the jewelry 1 to 2 hours. Then wash it with clear water. Wash gold ornaments with toothpaste. Dip some toothpaste with a small toothbrush and brush it with gold ornaments. Cleaning gold ornaments with clear water can restore luster and brightness as new. Wash the gold ornaments with rice. Soak the jewelry in rice washing water where the cotton swab may not be wiped. Maintain gold ornaments with nail polish. Apply a layer of nail polish to the surface of new jewelry. Good nail polish can protect the luster of gold jewelry.