What method can distinguish between true and false bully gold

Differential golden method:
(1) See color: the higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on green gold. The so-called green gold contains only silver ingredients in gold); dark red yellow color is more than 95 %, light red yellow 90-95 % The pale yellow is 80-85 %, the cyan is 65-70 %, and the white light is only 50--60 % white light. The slightly yellow and white are less than 50 %. Generally, Qiqing, Eight Huang, and Jiu Chi can be used as a reference.
(2) Type weight: The proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. The volume of gold is more than 40 % heavier than the silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. The gold jewelry should have a feeling of sinking in the hand, and the fake gold jewelry feels lightly. This method is not suitable for gold jewelry inlaid.
(3) Look at the hardness: pure gold is soft and low. It can draw light marks with nails. Teeth bite can leave tooth marks. High -colored gold jewelry is low in color. The bending method can also test the hardness, the pure gold is soft, it is easy to bend, the lower the purity, the less likely to bend.
(4) Listening to the sound: Throwing the real gold with more than 99 % to throw it on the hard ground, it will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds.
(5) Burning with fire: Burn the jewelry to burn red (do not melt the jewelry) with the fire (do not melt the jewelry), and observe the color change after cooling. The degree of darker is not pure gold. Generally, the lower the color, the stronger the color, and the darkens are all, indicating that it is a fake gold jewelry.
(6) Seeing the mark: Domestic gold jewelry is all prepared according to international standards, and the killing records, such as "24K" indicate "foot red" or "foot gold"; 18K gold, "18K", indicate "18K" Words, those who are lower than LOK, can not play the K -printed number according to regulations. At present, illegal elements are commonly used to make fake cards and imitation stamps in the society. They are used to impersonate real gold with rare gold, Asian gold, and even brass. There are font samples and marks, such as 24K, 18K, 14K, 12K, "Foot Chi", "Nine Show (Cheng)", "Five Show (Cheng)", and there is a place name for the silver building gold shop. Platinum jewelry is engraved with "Platinum", "P.T", "P.M"; silver stamped "foot silver", "nine star silver" and so on.
② Deep nitrate drip test: Nitric acid dripped in gold and platinum unchanged, dripped on copper and turned green, dripping on silver and turning black. ③ Observation and feel: real golden and bright, with heavy feel. Poor gold and imitation gold are poor, and the feel is lightweight. ④ Heating test: The gold does not change color within 1000 ° C and still has shiny. The copper burning is discolored after refining.
⑤ Identification of ingredients: Domestic testing of golden slate is generally used, and the grinding gold powder is used to compare with the original golden slate. Methods to distinguish sterling silver:
(1) See color (also known as face gear) test: the higher the purity, the white the silver, the fineness and even the surface of the surface, the color is moisturized. If the lead is contained, the tide flowers are blue and gray; if the copper is contained, the surface gear appears rough and rotten, and there is a sense of dryness. Although the oxidized silver has "black rust" on the surface, its color is dark and bright, tin, and white copper without luster, and their color is twilight.
(2) Type weight: Silver density is slightly larger than common metal. Generally speaking: "Aluminum light, silver heavy copper is not light and not heavy." Preliminary judgments. If the jewelry has a large accumulation and light weight, it can be initially judged that the jewelry is other metals.
(3) Check hardness: The silver hardness is lower than that of copper, and it is larger than the lead and tin. Copper jewelry; if it is a leading tin texture, the traces are obvious and prominent; if there are traces of the physical objects and not obvious, it can be initially determined as silver jewelry. Pure silver jewelry can be pulled by hand, and it can deform it.
(4) Listening sound rhyme: If the jewelry is high -colored silver, there is no rhyme, no elasticity, and the sound is "卟 卟 卟". The lower the color, the lower the sound, the higher the sound and the higher the rhyme; if it is copper, its sound is 100th, and the rhyme sounds are rushing and short. No elasticity.
(5) See the stubble mouth fixed color: intercept the silver jewelry and see the color of the stubble mouth. The stubble mouth is soft and soft, slightly red, and the color is around 95; the stubble mouth is white and gray, and slightly reddish is about 90; The silver with a color of about 70 is white and dry on the surface. The stubble mouth is red and yellow, and the bending is hard;
(6) Forgery of silver: Facing silver is generally made of red copper, brass, white copper, lead, tin, aluminum, etc. It is characterized by: red copper: purple and red, black and red, stubble, black red, stubble, black red, Green embroidery. Bronze: yellow appearance, green stubble beans, green embroidery. White copper: The appearance is gray -white, the stubble bricks are gray, and green embroidery. Leading: Gray blue, soft, can be drawn with nails. Tin: silver -white, soft, can be used to draw a trace with nails.
Gold
1, color: more than 70%of gold jewelry with gold jewelry color yellow and yellow, more than 80%of those who color are basically yellow, and as long as the color is more than 90%, including the ninety -nine gold we often mean , Nine -five gold, the color tone is clear, there is no black, gray, and blue mixed impurities.
2, weight: The golden body is small and heavy, puts on the palm of the heart, and has a clear sense of sinking.
3, softness: The higher the color of the gold jewelry, the softer, the more elastic. The real gold bite or the needle will have light marks. Low -colored and fake is just the opposite. The pure gold is soft and generally cannot be made into jewelry with complex shapes and hollow carvings. If you encounter jewelry that is too complicated, you must be vigilant. 4. Sound: "Sound" is the golden jewelry with high color in gold
. There will be a dull sound of throwing on the cement floor, and there is no sound without rhyme, and it does not return. It is commonly known as a "dead sound". Essence On the contrary, the low -collision gold jewelry is thrown on the cement floor with rhymes and sharp sounds, and a slight jump.

Fainting itself is a worthless thing to impersonate gold. Just find a material to put a layer of golden water. The color becomes yellow. The merchant scammers named it Tyrannosaurus called Overlord Gold to name it Lu Wangjin. It is Lu Wangjin. How to argue about this kind of things.