5 thoughts on “How to see the authenticity of gold jewelry”

  2. Jerry

    The method is as follows:

    1. Look at the color. The higher the purity of gold jewelry, the darker the color. If there is no gold medal, the general color can be determined according to the following colors (based on the blue gold. The so-called blue gold is the gold containing only silver); The fineness of deep red yellow is over 95%, that of light red yellow is 90-95%, that of light yellow is 80-85%, that of cyan yellow is 65-70%, that of cyan with white light is only 50-60%, and that of slight yellow and white is less than 50%

    2. Weigh. The density of gold is 19.32, which is higher than that of ordinary metals, so the gold will be heavier under the same volume. The same volume of gold is more than 40% heavier than silver, 1.2 times heavier than copper and 6.1 times heavier than aluminum. The gold ornaments should feel heavy in the hands, while the fake gold ornaments feel light. This method is not applicable to gold jewelry inlaid with gems

    3. Listen to the sound. When real gold with fineness above 99% is thrown on the hard ground, it will make a loud sound without rhyme or elasticity. The false or low-quality gold sounds are crisp without dullness. It usually makes a "Dangdang" sound, and there are aftersounds. It beats violently after landing

    4. Measure the hardness. Pure gold is soft and low in hardness. It can make shallow marks with nails and leave tooth marks. Gold ornaments with high quality are softer than those with low quality. The more copper they contain, the harder they are. The bending method can also test the hardness. Pure gold is soft and easy to bend. The lower the purity, the harder it is to bend

    5. Look at the marks. Domestic gold jewelry is purified and prepared according to international standards, and marked with kill marks, such as "24K" indicating "full red" or "full gold"; 18 karat gold, marked with "18K" words, if the fineness is less than 10k, the karat gold seal number cannot be printed according to the regulations

    extended data:

    cleaning methods for gold jewelry:

    1. To protect the luster of gold jewelry, you can apply a thin layer of nail polish on it

    2. If there is a black silver film on the surface, use 2G of salt, 7g of baking soda, 8g of bleaching powder and 60ml of water to prepare a "gold ware cleaner". Put the gold jewelry in a bowl and pour the cleaner. After 2 hours, take out the gold jewelry, rinse it with water (preferably not hard water), bury it in wood chips and dry it, and then wipe it with a soft cloth

    3. For the ring set with gems, roll a piece of cotton with a popsicle or matchstick. After wetting it in the mixture of toilet water and glycerin, scrub the gems and their frames, and then polish the ring with a flannel cloth. Never scrape with sharp objects such as blades

    4. Salt and vinegar are mixed to form a cleaning agent, which can be used to wipe pure gold jewelry and keep it fresh for a long time

    5. The luster can also be restored by wiping with toothpaste or scrubbing with hot concentrated rice soup

    6. It can be scrubbed with ammonia water

    reference source: Baidu Encyclopedia - Gold

  4. Tracy

    Tips for distinguishing the authenticity of gold jewelry:

    1. Look at the color. The higher the purity of gold jewelry, the darker the color

    2. When weighing, the gold jewelry should feel heavy in the hand, while the fake gold jewelry should feel light

    3. Listen to the sound. When more than 99% of the real gold is thrown on the hard ground, it will make a clicking sound, with no rhyme or elasticity. The false or low-quality gold sounds are crisp without dullness. It usually makes a "Dangdang" sound, and there are aftersounds. It beats violently after landing

    4. According to the marks, domestic gold jewelry is purified and prepared according to international standards, and marked with kill marks. For example, "24K" indicates "full red" or "full gold", and "18K" indicates "18K"

    extended data

    in addition to the above methods, there are other methods to identify adulteration:

    1. Whether gold has white bright spots

    cut the gold bar or gold jewelry with a material shear, and observe its section with a magnifying glass. If there are white bright spots, because gold and iridium cannot be fused together, it indicates that iridium is mixed in the gold

    2. Measure the specific gravity

    first measure the weight of a piece of pure gold bar with a balance, then put the gold bar into a measuring cup, and pour water to submerge the gold bar. Then put the detected gold bar into the measuring cup and observe whether the scale of the water rises or falls. If there is any change, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air inside the gold jewelry

    3. Real gold is not afraid of fire

    put the gold bar or gold jewelry on the fire for a while to observe its change. Because iridium will combine with oxygen in the air to produce oxidation reaction, gold bars with insufficient purity will turn gray; And pure gold will be bright red after baking. However, this method may cause some damage to jewelry

    reference materials:

    experts introduce the tips to distinguish gold adulteration. Look at the color and listen to the sound - People's daily

    gold - Baidu Encyclopedia

  5. Yvette

    1. Look at the color

    according to the different luster and color of gold, you can roughly distinguish pure gold, K gold, real gold and fake gold. The old saying "seven green, eight yellow, nine five red, yellow and white with gray and half gold" passed down from pawnshops describes the purity of gold. If the color is blue and white, the purity is not high, and if the color is red and yellow, the purity is high

    2. Listen to the sound

    when high-quality gold is thrown on the hard ground, it will make a sound without rhyme and elasticity. The false or low-quality gold sounds are crisp without dullness. It usually makes a "Dangdang" sound, and there are aftersounds. It beats violently after landing

    3. Weighing weight

    the density of gold is greater than that of other metals such as silver, copper, lead, zinc and aluminum. That is to say, with the same volume of these metals, the gold will be heavier. The real gold should feel heavy and the fake gold jewelry should feel light

    4. Test hardness

    pure gold is relatively soft. The higher the gold content, the softer it is. It is easy to bend by hand, but it has good toughness and is not easy to break. On the contrary, the lower the gold content, the harder it will be. It needs more strength to bend, and it is easy to break. When hard things are used, the scratch is not obvious

    5. See density

    the density of gold is 19.32g/cm3, which is about twice the weight of silver, lead and tin in the same volume. Available formula: the mass (g) of a certain gold jewelry is equal to the volume (cubic centimeter) of a certain gold jewelry. Calculate the density of the measured gold jewelry. If the density is about 19.32g/cm3, it is pure gold or relatively pure gold. Otherwise, it is non pure gold or gold with color difference

    extended data

    gold jewelry anti-wear tips

    1. Do not expose jewelry to chemicals

    2. The gold ornaments should be cleaned and inspected once a month

    3. When doing heavy work, avoid wearing gold jewelry, especially rings

    4. The luster can also be restored by wiping with toothpaste or wiping with rice soup

    5. Do not contact pure gold jewelry with perfume, hair gel and other highly volatile substances, otherwise it will easily lead to the fading of gold jewelry

    6. Pure gold jewelry should not be collected and worn together with other jewelry or other metal jewelry to avoid knocking and wearing the surface of pure gold jewelry

    reference: Baidu Encyclopedia: gold jewelry

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