Thousands of gold and K gold are gold materials, their main difference is in the amount of gold, thousands of gold, gold content of not less than 999 can become a thousand gold, that is, the traditional "three 9". The weight of gold jewelry is used National legal unit of measurement. The gold content should be expressed by K. Each opening (English carat, German karat abbreviation, often written "k") gold content is 4.166%, so 18K gold is not less than 75% gold, 14K gold is not less than 48 gold. %. Due to the difference in gold content, there will be some subtle differences in hardness and color. The higher the gold content, the softer the material. The color will be different from the content of other materials.
How to identify thousands of gold and K gold?
The most important and easiest way to check the jewelry quality inspection mark. The national standard has a very clear rule that each gold jewelry sold by the merchant must be listed to indicate its gold content and weight. The gold jewelry stamp includes the manufacturer code, material and purity. Such as: X gold 990, XAu990, X full gold. Among them, the letter X is the manufacturer code. When jewellery is made of precious metals of different materials or different purities, the materials and purity should be expressed separately. When the jewelry cannot be printed due to too thin or too small, etc., it should be accompanied by a mark containing the contents of the stamp. Others can also assist in identification by looking at color, hardness and other methods.
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In particular, consumers are reminded that the color of 18K gold jewelry is yellow, white and red. White 18K gold is an alloy of gold and nickel, zinc, silver, copper and other elements, and white K gold jewelry is not platinum (platinum) products.
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