1 thought on “The pendant of the thousands of gold has a dark point on the top, how can I get it?”

  1. Thousands of gold pendants refer to gold jewelry with a gold content of not less than 999.
    The mark is thousands of gold, 999 gold, GOLD999 or G999. The mark of the gold pendant includes the manufacturer's code, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc. Among them, letters X are the manufacturer code. When making precious metals with different materials or different purifications, materials and purity should be represented separately. When the pendant cannot be printed due to too thin or too small, it should be attached to the mark containing the mark content.
    The method of identifying thousands of gold pendants:
    It gold 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); The pale yellow is 80 ~ 85%, the cyan is 65 ~ 70%, the color is only 50 ~ 60%white light, and the slightly yellow and white are less than 50%.
    It gold 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, 18K gold pendant, and fake gold jewelry feels light. This method is not suitable for gold jewelry inlaid.
    It gold hardness
    pure gold is soft and low. It can draw light marks with nails. Teeth bite can leave dental marks. Golden island, high -colored gold jewelry, low color, is low in color. The harder, the harder, 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. Gold jewelry analysis: Gold jewelry refers to jewelry made of gold as the main raw material. The chemical symbol of gold is AU, the proportion is 19.32, and the hardness of Moh is 2.5.

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