jewelry necklace display stand wholesale Teach you how to identify gold and silver

wholesale patina jewelry How to identify the authenticity of gold, gold jewelry refers to jewelry made with gold as the main raw material. The golden chemical symbol is AU, the gravity is 17.4, and the hardness of Mobi is 2.5. Gold jewelry can be divided into two categories: pure gold and gold. The gold content of pure gold jewelry is more than 99 %, up to 99.99 %. Therefore, it is also known as "nine -nine gold", "full gold" and "red gold". Gold jewelry is a jewelry made of other metals (such as silver and copper) to gold materials, also known as "opening gold" and "golden gold". Due to the number of other golden careers, different K kills of gold jewelry are formed. In gold jewelry, the pure gold jewelry texture is soft, the teeth are bite, and it is easy to bend. The color is golden, pure, soft, heavy, and a heavy feeling. K gold jewelery is hard, the teeth are bitter, and the color is yellow in yellow, and it is reduced according to the golden numbers. The white is gradually increased and the yellow is gradually shallow. The feeling of harmonizing gold jewelry is not as heavy as pure gold jewelry. In addition, whether it is pure gold or K has seals, the seals on gold jewelry are useful "gold", and it is also represented by "one" English alphabet. The corresponding K number is marked. In addition, the jewelry also marks the seal of the origin of different manufacturers. Gold plating jewelry is plated on the surface of other metal jewelry on the surface of the electroplating method. The color is similar to the real gold jewelry. The golden light is bright, and it is difficult to identify when it is new. However, the gold -plated jewelry feels light, the texture is hard, the teeth are bitter, and it is easy to fade with a long time. Some gold -plated gold -plated jewelry, the color is either red or white, or flowers. Bao gold jewelry refers to 24 or 22K gold foil on other metal surfaces, such as the pressure of the gold foil, which is very low, and its softness is poor. Bao Jinshuo is similar to that of real gold jewelry. The golden light is sparkling and it is not easy to fade, making it difficult for people to distinguish. However, if you carefully observe the depression, angle, back, etc. of the jewelry, you can find that there are uneven gold foil and the phenomenon of tilting edges. If there are broken joints on the jewelry, you can see that the section of the metal material is yellow. Essence In addition, the feel of the gold jewelry is also lighter, the texture is harder than the pure gold jewelry, the teeth are bitter, and it is not easy to bend. Whether it is gold jewelry, gold jewelry, or copper jewelry, it is generally not printed with gold jewelry. Or it is different from gold jewelry. If some jewelry is engraved with the English letter "GK", the content is "gold -plated". Or the signature is vague and crooked. Consumers should identify whether there are printing on the jewelry, whether the printing is in compliance with the above provisions, whether it is clear, etc. to determine the authenticity of gold jewelry. In the end, the author reminds consumers that when buying gold jewelry, it is best to go to the reputable formal gold shops. If you are not allowed to buy the gold and silver jewelry purchased, please go to the professional appraisal center in time to prevent being deceived. The method of identifying the true and false of silver jewelry 1. The higher the purity of the color test (also known as the face gear), the white the silver, the delicate and uniformity of the face gear, and the color. 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. Second, the density of the weight of the silver is slightly larger than the average common metal. Generally speaking: "Aluminum is light, silver heavy copper is not light and not heavy." Therefore, the weight can make a preliminary judgment on whether it is silver. If the jewelry is large and the weight is lighter, it can be preliminarily determined that the jewelry is other metals. Third, the hardness of the hardness of the hardness is lower than the copper, and it is larger than the lead and tin. The texture of the lead tin is obvious and prominent; if there is traces of the physical objects, but not very obvious, it can be initially determined as a silver jewelry. Pure silver jewelry can be pulled by hand, and it can deform it. Fourth, the sound rhyme jewelry, if it 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. Fifth, look at the colors of the stubborn mouth to intercept the silver jewelry, and look at the color of the stubble mouth. , Slightly red, the color is about 95%; the stubble mouth is white and gray, and the slightly reddish color is about 90%; the bending of the hand is harder, the stubble mouth is light red or gray, and its color is about 80%; At about 70%of silver, its surface is white and dry, and the stubble mouth is reddish and yellow, and the bending is hard; 6. Forgery of silver, forged silver is generally made of red copper, brass, white copper, lead, tin, aluminum, etc. It is characterized by: red copper: purple -red appearance, black and 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. Aluminum: white gray, soft and light constitution