No matter what kind of jewelry it is, it must be carefully cared for and cleaned regularly to keep its luster bright and intact.
Don't wear jewelry when exercising or doing heavy work to avoid being bumped or worn.
Don't put all kinds of jewelry in the same drawer or jewelry box at will, because all kinds of gems and metals have different hardness, and mutual friction will lead to wear.
Jewelry that is often worn should be checked once a month to see if it is worn or loose, and then repaired.
Fragile gems, such as emeralds, break easily, so be careful when wearing them.
Don't wear a jewel with pores in the kitchen or where there is steam, or the jewel will change color when it absorbs steam and sweat.
Gold medal maintenance
Pure gold jewelry is prone to chemical changes with silverware, mercury, lead and other metals, causing white spots on pure gold jewelry, but the white spots will disappear after volatilization by fire. Try to avoid contact with the above metals when wearing. We live in an environment with industrial waste gas of carbon disulfide or other corrosive chemicals, such as phosphate. These pollutants will directly corrode gold (alloy) and cause tiny black spots on pure gold jewelry. Even if jewelry is collected, it will inevitably be corroded. In this case, it is necessary to return the jewelry to the jewelry store for cleaning.
Diamond maintenance
Diamonds are the hardest natural substance in the world. If they are put together, they are easy to scratch when rubbing against each other, so they should be stored separately in boxes or transparent clothes. Other precious stones and jade articles should be collected in the same way. If you want to clean the diamond jewelry yourself, you can soak the diamond jewelry in diluted soap solution, gently wipe the diamond and its holder with a soft brush, then rinse it with clear water, and then absorb the water with a soft cloth. At the same time, don't forget to clean them with boxes in advance or plug the washing boxes to prevent diamonds from falling into the canal.
How to distinguish platinum from silver jewelry
Silver is a metal next to gold. Its exquisite color and plasticity make it the main material for making all kinds of silverware and jewelry. The melting point of silver is 960.5℃, and it can be made into 0.00 1 5cm silver foil, and1g pure silver can be drawn into1800m silver wire.
Platinum is a precious metal that emits dazzling white light, and its color is natural silvery white. Bright luster and never fading are its characteristics.
Methods for distinguishing platinum from silver;
1, seal identification
Jewelry "PT" or "PLATINON" or "PLAT" is platinum. At present, Japan produces 75%-95% of platinum jewelry on the market, while Europe and the United States produce 90% of PT90.
Jewelry with the word "S" or "silver" is silver. For example, S925 indicates that the jewelry contains 92.5% pure silver, and if SF is sealed, it indicates that the jewelry contains silver and copper.
Step 2 consider
The specific gravity of platinum is 2 1.40, and that of silver is 10.49. The same volume of silver is nearly twice as light as platinum, which can be distinguished by weighing it.
3. Comparison of appearance hardness
When platinum is carefully observed with the naked eye, it will be slightly grayish white, bright white, hard in texture, and will not leave any trace with a pin. Its Mohs hardness is 4.3, while the color of silver is white, and its texture is smooth and delicate. Once oxidized, it will turn gray or horse black, but it can be erased. Its Mohs hardness is 2.7, which is much softer than platinum.
4. Fire method
Platinum can resist high temperature oxidation, and its melting point is as high as 1770 degrees Celsius. After cooling by high temperature fire, the color remains unchanged, while the melting point of silver is low. After burning at high temperature, its color is red, black or jet black, depending on the silver content.
5. Chemical methods
Platinum is chemically stable and resistant to corrosion. It cannot react with any acid or alkali, and silver is not resistant to strong acid corrosion.
Antivirus and health care functions of gold and silver ornaments
Gold and silver can prevent the harm of harmful substances such as mercury and sulfur. In modern social life, people have many opportunities to contact with mercury. Broken thermometers, thermos bottles, inferior cosmetics and industrial wastes (waste gas, waste water and waste residue) all contain mercury to some extent. Wearing gold and silver ornaments can eliminate or reduce the toxic effect of mercury and play a role in protection and health care. When people find that their gold jewelry turns white, it's not that gold has gone bad. In fact, it is the gold jewelry that comes into contact with mercury, resulting in a layer of white "gold amalgam". This not only reduces people's exposure to mercury, but also reminds people that there is mercury in your living environment.
Basic knowledge and maintenance methods of silver jewelry
First, the basic properties of silver
Silver is a bright white and lustrous precious metal with stable chemical properties, but it will turn black when it meets hydrogen sulfide, sulfur or ozone in the air.
Second, simple cleaning and polishing at home
Due to the different components of sweat secreted by the human body, some people are prone to blackening when wearing silver ornaments. This paper introduces a simple cleaning and polishing method.
1, neutral soapy water cleaning. Prepare a 40-50 degree soap solution with neutral soap, soak the silver ornaments in it for 10 minute, lightly brush with a soft brush and then rinse with clear water.
2. Toothpaste polishing. Apply toothpaste to silver jewelry, wipe it back and forth with felt, rinse it with clear water, and finally dry it with flannel.