Every time I go to buy the boss, I say it is true, ask him if he will turn black, and say no, say that it can be washed with toothpaste, and it is dying. Wash white.
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Every time I go to buy the boss, I say it is true, ask him if he will turn black, and say no, say that it can be washed with toothpaste, and it is dying. Wash white.
It can distinguish the authenticity of sterling silver necklace in terms of color, flexibility, weight, sound, hardness, etc.
1. Observe the color
First of all, you can look at its color. The higher the purity, the whitening the color, but it is easy to be oxidized and black, although the oxidation is a bit dark, but it is very bright.
2. Flexibility
The real sterling necklace is not only white and bright, but its flexibility is also very good, and the flexibility of the fake silver necklace will be much worse.
3. weight
people often say: "The quality of aluminum is light, the quality of silver is heavy, and the quality of copper is not light or heavy." So we can judge whether it is a silver necklace by wearing its quality.
4. Test hardness
This silver is lower than copper than copper, but larger than lead and tin metal. When we choose the silver necklace, we use a hard east to experiment on it. If there is a slippery, there is no printed on the surface, and it can be excluded from the silver.
5. Listening to silver
The sterling silver jewelry throwing sound, no elasticity, the sound is "卟 卟 卟". The lower the color, the lower the sound, and the higher the sound, the higher and the rhyme.
The expansion information: Solution of silver ornaments:
If the silver jewelry turning black, do not rush to wash it with silver water, because silver water is a chemical preparation, and there is a certain corrosion of the jewelry. Fit.
The silver cloth is your first choice. There are also many small recipes. For example, put the silver jewelry in Coke all night, or wash with a soft brush dipped in toothpaste, but after washing, you must remember to dry the water with cotton cloth.
Reference materials: Baidu Encyclopedia-Silver Jewelry
The identification of the silver
1. The color
The silver jewelry is mostly slightly yellow silver -white, with a soft metallic luster. Because it is easy to oxidize, the color will become dark yellow and white.
2.
The density of silver is 10.53 grams/cubic centimeter, and the density of 925 silver is 10.40 grams/cubic centimeter. Smaller than platinum and gold, without falling feel. Steel needles can draw traces or bend. In this way, it can be distinguished from the moral jewelry of platinum, K platinum or imitation silver.
3. acid test
The silver will change color and even dissolve. If a drop of concentric acid is dripped on the inner side of the silver jewelry, a white moss -like silver chloride sediment will be generated immediately. Other precious metals have no such phenomenon.
4. Sound rhyme
The standard silver jewelry is dull after landing, no bounce, no rolling.
Extension information:
The difference
925 silver: refers to the silver containing 92.5%of the silver, which is recognized as a sterling silver standard in international standards. 100%silver is soft, it cannot be formed during production, it is inconvenient to make silver jewelry, and it is easier to "oxidize". It is commonly known as "discoloration"
Silver silver: the industry has no external plating white gold (that is, white 铑, industry is called Platinum) 925 silver is called "Su Yin". Su Yin is easier to oxidize in the air. 925 silver sold on the market has a large proportion of products to reduce the cost of the bottom. After gold plating, the silver can be delayed to become yellow and black when oxidation or vulcanization.
Thai silver: Thai specialty, the standard is also 925 silver content. The appearance lacks light, pursuing a "ancient" "ancient silver" effect. Compared with the 925 silver -plated silver jewelry, because the popular foundation is not extensive enough, the price is the bottom.
Tibetan silver: Generally does not contain the ingredients of silver, it is the elegant name of white copper (copper nickel alloys). Traditionally, Tibetan silver is 30%silver plus 70%of copper, but even such a traditional craft "Tibetan silver silver "The market has not been seen, and most of them are replaced by completely white copper.
Reference materials: Baidu Encyclopedia-Pure Silver
Pay content for time limit to check for freenAnswer 1. First of all, look at the meaning of the word 925. This refers to the saturation of the silver. The real daily silver is not 100 % silver. It is difficult to save 100 % silver. The 99 % silver can be dropped directly. 2. Looking at its reflection, the silver with higher purity is generally bright, and the snow is as white as snow. The worse with a little bit of other yellow reflection. No reflective is definitely other metals. 3. Chemical test, a little nitric acid drip on the silver, the silver will appear green, the deeper the green content, the higher the content. 4. Listening to the sound, the higher the purity of the silver, the longer the sound of the sound, and the sound of the sound. Conversely, the poor silver sound is crispy. You can try to throw it out for testing. 5. The ductility of the silver is better. It can withstand that the quality of the silver is constantly refining, the better the quality of the silver.nIf my reply helps you, please like me, thank you!
Although silver jewelry is not valuable, it is true and false. Although this phenomenon is not common, consumers should still master some methods of identifying silver jewelry. Consumers can be tested through the physical properties of the silver when they buy. The general test methods are:
It look at the color of jewelry: the higher the purity, the white the silver, the surface of the jewelry, the surface of the jewelry is uniform and bright, and the color is moisturized. If it contains lead, the jewelry will show blue and gray; such as copper, the surface of the jewelry will appear rough, and the color is not moisturized.
Ilistellar weight: Silver density is slightly larger than the general common metal. Generally speaking: "Aluminum is light, silver, and copper is not light and not heavy." Therefore, the weight can be made of silver. Preliminary judgment. If the jewelry is large and the weight is lighter, it can be preliminarily determined that the jewelry is other metals.
This hardness: Silver hardness is lower than copper, and is large than lead and tin. It can be tested with inconspicuous places with large head needles. If the needle is slippery, it is difficult to leave traces on the surface. ; If it is a lead and tin texture, the traces are obvious and prominent; if there are traces of the physical objects, but not very obvious, it can be preliminarily determined as silver jewelry accessories.
This sound rhyme: Silver jewelry jewelry throws sound, no elasticity, the sound is "卟 卟 卟". The lower the color, the lower the sound, and the higher the sound, the higher the rhyme; if it is copper, the sound is higher and sharp, and the rhyme sounds are short and short; , No elasticity.
The disadvantages of silver are fear of sulfur. The proportion of sulfur containing sulfur in air and smoke is high. Silver jewelry has a chemical reaction in the sulfur and produces silver sulfide and shows black. Especially in the Great City, it is difficult to keep the silver.
From the above description, you bought a real silver necklace.
For silver that turns dark, you can wash it with silver water washing water, or you can use a soft brush to dip the toothpaste to wash. After washing, wipe it with a cotton cloth.
The expansion information:
The silver, that is, metal silver with a content close to 100%. Silver chemistry is not lively, but because silver and sulfur have special affinity, it can slowly generate silver sulfide in the air to make it darkened and make silver impure. And in nature, silver and platinum are mixed with platinum. Therefore, the "sterling silver" in life generally refers to 925 sterling silver with 99.99%of silver or 92.5%of the content.
Reference materials: sterling silver-Baidu Encyclopedia
Silver turning black is a normal reaction. Everyone says that some people wear silver to wear, the brighter, the more people do not support the silver and the darker, but these claims have no direct relationship with the goodness of the human body.
Igly is an active metal that is easy to chemically react with the sulfur in the air, making the silverware black. Therefore, try to contact the air as little as possible when we wear it, and it is not advisable to wear in places with strong chemical gases. After contacting sulfur soap, you must do it immediately. The chloride in sweat also has an impact on silver. The oxygen response to the air will also generate a black silver oxide
. Although the raw materials of the silver are very cheap, some manufacturers will add cheaper metals such as cadmium, iron, and copper in silver. Cadmium is harmful to the human body, and it is not allowed to be mixed in jewelry according to regulations. Manufacturers do this mainly to reduce costs and get higher profits. The copper wire is mainly mixed with the middle support frame in the silver lock. The supporting frame in the silver lock according to the national regulations should also be silver. Because the copper silk is hidden in the silver lock, consumers can't see it at all. Only when the jewelry detection is performed, it can see the true face of Lushan. Only when it is waiting for a long time, the copper rust inside is exuded can consumers find it.
The identification of silver jewelry is mainly the following methods
In the hardness
The higher the quality of the silver jewelry, the softer the quality, the more white and moisturizing the surface. Take the silver bracelet of about 60 grams as an example. If you open it with your hand, there is no elasticity, and its color is about 95%; if it is a bit elastic, the color is about 80%-90%; %the following.
This stubble
This to cut or fold the silver jewelry to see the color of the stubble mouth. If the jewelry is soft, the stubble mouth is thick and soft, with a slight redness, the color is about 95%; if the hands are bent hard, the stubble mouth is white and gray, or slightly reddish, the color is about 90%; Larger, the stubble mouth is light red, yellow and white, or gray, with a color of about 80%; if the bend is hard, the stubble mouth is red, yellow, yellow, etc., and the color is about 70%; Or yellow in the yellow, the color is 60%.
Sterplasia of silver medicine
Man the silver jewelry on the tasting stone (the same as the golden test gold), and the silver medicine (silver medicine is mixed with silver powder and mercury into software shape) in the shape of the silver medicine) Apply the silver road, the color of the silver medicine is high, the color of the silver medicine is low, and the silver medicine is a fake.
The color discerning method
The identifies its color and true and false. High color, it looks white, delicate, shiny, and printed on the jewelry with manufacturers, shop numbers and other marks; low color, slightly yellow color, rough workmanship; fake silver jewelry is dark and unclean.
r
M pinch with your fingers, high and flexible, easy to be bent and not easy to break; It can not even be folded with your fingers; Baoyin's bending or knocking with a hammer will crack; if you fake it, you can't stand the bend and easily break.
This tossing method
The silver jewelry with high color color, throwing on the tablet is not high, there is a sound of "click"; The board bounced high, and the sound of the sound was relatively crisp.
If nitric acid identification
In the glass rod to drop the nitric acid at the mouth of the silver jewelry, which is high -colored in color, hidden green or slightly green; Essence
Stin head jewelry is mainly used for physical and chemistry.
The principle of physical whitewashing method is to use small particles in the medium to remove the oxide film on the surface of the silver jewelry, which is equivalent to peeling a layer of skin on the silver jewelry.
The specific methods are:
1. Wipe with toothpaste and toothbrush.
2, apply lipstick to the cloth and then wipe the silver jewelry, and finally rinse with water.
3, apply the modified solution to the silver jewelry, and rub the silver jewelry with cloth before the modification liquid, which is absolutely effective.
The chemical whitewashing method is relatively simple. The principle is to destroy the oxide film on the surface of the silver jewelry through the reaction of chemistry. In the relatively physical method, the chemical method is relatively simple, and the silver jewelry will no longer be silver jewelry. Rent scratches, which is more suitable for our use in daily life.
The specific method:
1. Soaked with Coca -Cola, cola contains carbonate, and the soaking time is 12 hours.
2, scrubbing with vinegar for boiled vegetables, vinegar contains acetic acid.
3, soaked with tea separated by night, there are substances in oxalic acid in the night tea.
4, wipe with silver cloth, and the chemical composition of removing silver oxide on the silver cloth.
5, soak the silver washing water for one to two minutes, and then rinse it with a lot of water. You can find it in Taobao's sailing network mall, a professional collection products store.
Reference web link