southwestern jewelry wholesale How to distinguish the authenticity of gold?

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southwestern jewelry wholesale

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  1. Marcia

    rainbow topaz jewelry wholesale Gold has been sought after by people since ancient times. Because it is expensive, there are many businessmen who want to seek Heili with falsehood, so I will share some identifying experiences for everyone.
    01 Seeing the mark
    The domestic gold jewelry is all prepared according to international standards, and stamps, such as "24K" indicates "foot red" or "foot gold"; 18K gold, indicating "18K" Words; those who have less than 10k in color, cannot be called K -printed number according to regulations. At present, illegal elements are commonly used in the society to make fake cards and imitation stamps, and use thin gold, Asian gold, and even brass to impersonate real gold. Therefore, the identification of gold jewelry must be comprehensively determined according to the sample to determine the true and false and the quality of the color;
    02 The weight of the 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 with gemstones;
    03 test hardness
    is soft and low in hardness. It can draw light marks with nails. Teeth bite can leave tooth marks. Softness is low in color. The more copper, the harder, the harder, and the bending method can also test the hardness. The pure gold is soft, it is easy to bend, the lower the purity, the more difficult to bend; Throw more than 99%of the real gold on the hard ground, and it will make a sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but not dull. Generally, the sound of "Dangdang" is made, and there are surplus sounds. (Do not melt the jewelry), and observe the color change after cooling. If the surface is still the original golden color, it is pure gold; Generally, the lower the color, the stronger the color, and all of them are black, indicating that it is fake gold jewelry;
    06 to see the color
    The higher the purity of the gold jewelry, the deeper the color. If there is no comparison of the gold medal, you can determine the general color according to the following colors (with the golden gold as the criterion. The so -called green gold is only the silver ingredient in the gold): the dark red yellow color is more than 95%, and the light red yellow yellow to 95%is 90%~ 95% The pale yellow is 80%~ 85%, the cyan is 65%~ 70%, the color blue with white light is only 50%to 60%, and the slightly yellow and white are less than 50%. Generally, Qiqing, Eight Huang, and Jiu Chi can be used as a reference.

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