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Why does 18K gold be black and colorful

5 thoughts on “Why does 18K gold be black and colorful”

  1. The reasons and solutions of the 18K gold necklace turn black:
    1. Over time, gold jewelry has no glossy daily wear or environmental factors that can make gold jewelry lose its bright color. For example: dry areas, the air contains more minimum dust. After the human body is contaminated, it will form a "human sandpaper". It can wear gold jewelry to erode very slight debris and local black stains. It is worth mentioning that the refreshing powder or moisturizing cream also contains similar particles, which will also make gold jewelry barely like the above.
    Cope: Wash the goldware with ultrasonic is safe. Do not wear gold to swim to the pool. The too hot environment is not suitable for saving gold wares. When cooking, pay attention to avoid hot smoke to damage your gold jewelry.
    2. The cause of golden jewelry black and darkened waste and harmful substances, chlorine substitutes, lactic acid, urea ammonia, etc., will cause chemical reactions with silver and copper in gold jewelry, and produce dark black silver chloride chloride. With copper sulfide, this chemical salt sometimes falls from gold jewelry, and it will also pollute the skin of the wearer, leaving very obvious black stains.
    Cope: Washing is the simplest method with mild soap and soft brush (baby toothbrush). Avoid toothpaste containing abrasives. Water columns can also replace soft hair brushes. After cleaning the golden jewelry, you can use the old towel with a cotton velvet line to dry, or it can be air -dried on the towel.
    3. The less gold in the gold jewelry will be wearing less and less gold in gold jewelry, but the consumption of this quality cannot be seen by human eyes. At present, cosmetics have become one of the "characters" for people's lives. If it is applied to the skin of the gold jewelry, it will undoubtedly provide opportunities for cosmetics containing chemicals and the golden jewelry that is most afraid of chemical erosion. The results can be imagined. Some cosmetics also contain some fine hard particles, which can form another type of dirt, thereby wear gold jewelry.
    Cope: Avoid contact with cosmetics and skin care products. Before you go to the barber shop, it is best to remove the gold jewelry, and the shampoo may also consume gold.

  2. For friends who buy a ring, when choosing a ring material, the idea of ​​18K gold and platinum is always unsure. It is worried that the platinum is too soft and the diamond will fall. Will 18K gold change color? What if we will do?

    The first understand what is 18K gold:

    18K gold is 75%gold, and then there are 25%of other metals. For other metal components, you can make 18K gold with different colors. For example, white 18K gold is made of 25%silver -zinc nickel (if you add 25%copper, you can converge into rose red 18K gold; Wait). 18K gold now has three colors on the market, namely white, yellow, and purple called rose gold.

    18K gold will change color?

    18K gold will not change color, but 18K platinum is not really silver and white, always slightly yellow and white. Therefore, it is generally plated in the upper layer of silver. It refers to the original color that appears in this layer of gold -plated, so 18K gold is just 18K platinum. If you often contact chemicals with strong acid and strong alkali stimulus, it is easy to change color, such as laundry powder, dishwasher, cosmetics, etc. Or when rubbing with other hard objects, they will wear different degrees of wear. After the coating is worn, the metallic nature will be exposed, and a faint yellow and white will appear.

    what to do after the color change of gold?

    This is normal. This is a normal phenomenon. As long as it is a product that is qualified for the quality inspection center, it should not be a quality problem. If you change color, you can go directly to your seller or related professional jewelry institutions for maintenance, and then re -clean the electroplating. But pay attention during wearing.

  3. 18K Platinum itself is pale yellow. The jewelry we see is white because a layer of white metal is plated outside. It takes a long time to wear (especially the wear at the abdomen is strict) and the color of the 18K gold inside is exposed. If this kind of problem occurs, you can get it back to the brand to maintain it. The current jewelry brand generally provides this service ~~~

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