The following mainly describes jewelry from three aspects. Gold jewelry identification methods, jewelry maintenance, jewelry cleaning methods, friends interested in gold, jewelry can look. Before you look at it, everyone should pay attention to it. Gold and jewelry are different. The range of jewelry is very wide. This article talks about both gold and jewelry.
1. Method of identification of gold jewelry:
Look at the color
According to the different luster and color of gold, it can be roughly distinguished from pure gold, K gold, real gold, and fake gold. The gold is golden yellow, pure and soft; K gold has yellow, red, white and other colors; the products are mostly copper alloy, the color is lighter. Gold is preferably reddish yellow, its color is above 95%; positive yellow color is about 80%; blue yellow color is about 70%; yellow slightly grayish color is about 50%. Therefore, there are mouths for "seven green, eight yellow, nine five red, yellow and white with gray to half gold." For the jewelry that has been in the first time, there is a saying that "the copper turns green, the silver turns black, and the gold hardly changes color".
2. 掂 weight
The density of gold is 19.32 g / cm 3 , which is much higher than the proportion of similar products. Therefore, the handcuffs of gold products have a heavy feeling. Although the gold jewelry sold on the market is lighter than gold, it is also more than the same size of imitation gold products. .
3. Suitable hardness
The gold jewelry has a soft texture, and the teeth are bitten and printed, while the K gold is harder and the teeth are bitten without printing.
4. Look at the signs
National standards stipulate that precious metal jewelry should be marked with origin, manufacturer, materials and content, and unmarked products are unqualified products. In case of quality problems, the quality inspection organization can judge and judge according to the imprint. Consumers can purchase the gold necklaces with different brands and different gold content according to the imprint.
5. Listen to the rhyme and see the elasticity
When the high-quality gold jewellery is hit or hit hard, it gives a dull, low-pitched sound, and has no phonology and no elasticity. K gold has phonology, sound, elasticity, and elasticity. The sharper the melody, the worse the color.
6. Using the touchstone
Use the gold pair card (the gold medal that has been determined to be the color) and the jewelry to be honed on the touchstone to determine the color of the gold jewelry by comparing the colors. This method should be carried out under natural light and fluorescent light and should not be carried out under direct sunlight and incandescent light.
2. Maintenance of jewelry:
1. Do not wear K-gold jewelry for housework or heavy work, so as to avoid tarnishing, deformation or even breakage of the jewelry due to friction or impact caused by external forces.
2. Chemicals will react with jewelry. Wear or store jewelry should avoid contact with perfumes, hair gels and other cosmetics and vinegar, bleach, correction fluid and other chemicals.
3. The sweat of the human body will corrode K gold jewelry. After wearing the jewelry for a period of time, it may have dirt, dark color and other phenomena. It can be soaked in washing spirit, gently brushed with a soft brush, rinsed with water, and worn after drying.
4.K gold is more expensive, must be careful to wear, must not pull, smash, fold, should be stored separately in a cloth box.
5. Gold jewelry should not be placed together with mercury-containing items such as thermometers and red syrups to avoid contact with metals such as mercury and lead. When whitening, it can be baked on a fire or alcohol lamp for a while, then wiped with a soft cloth can be as splendid as new.
6. If the gold jewelry is discolored and deformed seriously, it must be repaired by the professional maintenance department for electroplating and reforming. The jewelry that is often worn is recommended to be sent to a professional jewelry store for cleaning and maintenance every six months to keep the jewelry decoration. The effect is to extend the service life.
3. Jewelry cleaning methods:
1. Generally, when the alcohol is soaked for a few minutes, it is taken out, washed with water and dried, and the general sweat stain is gone.
2. When the gold jewelry is white, it can be baked on a fire or alcohol lamp for a while, then wiped with a soft cloth can be as splendid as new.
3. When the gold jewelry is faded or slightly blackened, apply some toothpaste and wipe it with a soft cloth to restore the color.
4. Add 30 degrees to 40 degrees of warm water to form a developer solution, then add one-time dilution of water, soak the jewelry in this water for a few minutes, then use a soft brush to remove dirt, then rinse with water several times. If you use a thin woolen cloth to clean the transparent, colorless nail polish after cleaning, it will also make the jewelry golden.
5. For K-gold jewelry with jewellery, when wearing and accumulating sweat, use the old toothbrush with neutral cleaning solution or the market-sold jewellery cleaning solution to lightly brush the bottom of the pedestal and the crevice at the diamond. Otherwise, the jewel will It is eclipsed because the overall transparency is reduced.
6. If the gold jewelry is seriously eclipsed, it can be treated with an ultrasonic cleaner or special potion. The ultrasonic cleaner uses an ultrasonic cleaning lotion to continuously shake under the action of ultrasonic waves, and removes dirt and discoloration on the surface of the jewelry. The special syrup is a specially prepared dilute sulfuric acid solution.
7. In addition to cleaning, the surface of K gold will appear many small traces due to long-term friction, and the brightness will also be reduced. On weekdays, the surface of the K gold cloth can be lightly ground to have a flattening effect, but generally it takes two to three years to do the polishing. After the precision plating, the jewelry can reproduce the beautiful and bright light.
Toddler Boy Dress Shoes,Toddler Girl Tennis Shoes,Stride Rite Toddler Shoes,Toddler Girl Dress Shoe
Huaying Shoes Co. Ltd , https://www.hya3shoes.com