brass jewelry findings wholesale I feel that the gold I bought is fake. Where can I identify thank you!

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brass jewelry findings wholesale

5 thoughts on “brass jewelry findings wholesale I feel that the gold I bought is fake. Where can I identify thank you!”

  1. Otis

    large jewelry box wholesale Differential gold requires some experience.

    (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): dark red yellow color is more than 95%, and light red yellow 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.

    (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 prints. High -colored gold jewelry is low and soft, with copper with copper, contains copper containing copper, contains copper containing copper 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.

    (4) Listening to the sound: The real gold with a color of more than 99%is thrown on the hard ground, and 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: The jewelry will be burned red (do not melt the jewelry) with fire (do not melt the jewelry), and observe the color change after cooling. Dark or different degrees of darkness is not pure gold. Generally, the lower the color, the stronger the color, and the darkens, which means that it is a fake gold jewelry.

    (6) Seeing the mark: Domestic gold jewelry is allicized and prepared according to international standards, and stamps, such as "24K" indicates "foot red" or "foot gold"; The word "18K"; those who have less than 10k in color cannot be called K -gold printed according to regulations. At present, illegal elements are commonly used to make fake cards and imitation stamps in the society. They use rare 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.

    The accurate identification of gold jewelry in accurate commonly used common methods.

    (1) Testing gold stone method: Select the black test gold stone with delicate texture, use the standard tasting films with different gold content (on the gold medal) on the test gold stone, and then put the gold jewelry sample you want to identify in The scratches on the same goldstone, drip the concentrated nitric acid to remove the impurities, find the traces left on the test gold stone comparison with the traces of the tested slices, find the same color as the jewelry sample,

    comparement The standard degree of sample gold is the accurate gold content of the determination of the gold jewelry sample.

    (2) Chemical method: also known as reagent test method. Gold is insoluble in separate nitric acid, sulfuric acid, and hydrochloric acid, while silver and copper ingredients

    can be dissolved with a chemical reaction with nitric acid. Take gold decorative sample. Putting nitric acid on a certain part, if gold will not change color, if it is silver products, it will generate silver oxide and turn black; For gold jewelry with a amount of gold above 95%, test with nitric acid, the surface changes very small.
    3. Gold, gold -plated and imitation gold jewelry

    The gold jewelry is a thin layer of gold foil made on the surface of the blank parts with a mechanical method. The interior is copper , Silver, nickel, copper -zinc alloy, etc., the thickness of the packets is generally about 10-50 μm. Observe a carefully observed interface on the jewelry layer, and it can be seen by 10 times the large mirror.

    The gold -plated jewelry is a thin layer of gold foil in a special plating groove. The gold -plated jewelry must be indicated according to the regulations. For example, P4A 璘 indicates that the thickness of the gold plating layer is 4 μm. The gold -plated layer is easier to grind. Especially non -regular factories are mostly made of gold plating or acid plating

    gold methods, and a thin layer of gold is placed on the surface of the blank parts. It is easy to corrode, it will change color soon, and some will change color as soon as they enter the water.

    If imitation gold jewelry, also known as Asian gold jewelry, is golden yellow in appearance. It is mixed with metal elements such as copper, nickel, and zinc. Printing. Consumers can distinguish between the feel, rhyme, weight and hardness.
    If if you buy a diamond ring, the price is actually very high, because the brands of merchants such as Zhou Dafu and Zhou Shengsheng will add the added value of the brand, which is relatively high. The price is relatively high. Low, the main evaluation of diamonds is to use the four major standards of the diamond color, clarity, weight, and cutting to transport the value of the diamonds. Therefore, it is recommended that you go to a regular website to buy it. If you decide to buy a diamond ring online If you, you must find a regular website. After all, the money for buying a diamond ring is not a small number. My colleague has developed a diamond ring for his girlfriend's real name in the online mall of Jin Taifu. If you customize it, you can consider the Jin Taifu Diamond Wedding Diamond Customization Center. It is said that Jin Taifu Diamond Customization Center focuses on custom emotional diamond jewelry. Incorporate the little bit of love into the design. It is favored by urban white -collar workers. The female colleagues in our office think his girlfriend is very happy. We all envy. We all think that this male colleague is very considerate. I think such a diamond ring is also suitable for you and your girlfriend.

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