If it is a diamond, use a small bowl or teacup to hold warm water, and mix an appropriate amount of neutral detergent (detergent) in the water. Soak the diamond in water, gently brush it with a brush, then wrap it with a sieve, rinse it with warm water, and pat it dry with a soft cotton-free flannel. You can also use a small bowl or teacup, mix a proper amount of clean water with household Sakyamuni water, soak the diamond in the water for about 30 minutes, then gently brush the diamond in front, back, left and right with a small brush, then wave it in the water for a while, and then take it out and dry it with a paper towel. Or buy jewelry cleaning solution. If it is silver, it is generally divided into electroplating and electroless silver ornaments: that is, the inner layer is pure silver, and the surface is being treated with current; Electroplating is generally divided into gold plating and platinum plating; The way to identify electroplating is that its surface is brighter than pure silver, like a mirror, with good reflective effect and less oxidation. Electroless silver jewelry: easy to lose luster due to vulcanization. Sulfur dioxide in the air reacts with silver to form a layer of silver sulfide on silver ornaments, which is the same as the apple will slowly turn black after being cut. ). Cleaning of electroplated silver jewelry: 1. First go to a nearby Chinese medicine shop or drugstore to buy a pack of alum; 2. Then use the silver jewelry you wear as; The proportion of boiling water (water must be boiled); 3. Take out the silver ornaments and put them in cold water. Use a soft brush (such as a toothbrush) dipped in toothpaste or laundry detergent or salad for cleaning. 4. Blow dry with a hair dryer, and then wipe with suede, as bright as new; The biggest reason for the oxidation of silver ornaments without electroplating is the oxygen in the air, so blocking the air is the best maintenance method. For example, put the silver ornaments in a sealed plastic bag and then put them in a pearl box to block the contact between air and silver. When silver is oxidized, silver ornaments can be wiped with silver washing water or silver cloth. However, silver washing water is more lethal. Please try to wipe it with silver cloth unless you have to. If you use silver washing water to brighten it, you should immediately pick it up and rub it gently, and clean the chemicals on the surface and dry it with a hair dryer, otherwise the oxygen in the water will accelerate the oxidation of silverware. In addition, there is a little trick to brighten the silver ornaments, which is put forward here for your reference: if you want to brighten the newly bought silver ornaments and avoid blackening, you can apply a thin layer of transparent nail polish on their surfaces, and then apply it again every ten days. If you want to remove nail polish, you can soak it in banana oil and then wash it with water.