What's the gold content in the bank? Is it 24 karat gold or thousands of gold?

1. There are many kinds of gold in the bank, depending on which product you buy. Generally speaking, gold bars have AU9999 content, but the purity of some handicraft products, especially handmade products (products similar to filigree inlay process), will be correspondingly reduced, which may be AU999 (thousand gold) or au99 (full gold). However, it is said that all raw gold with 99.99% purity can reach 99.995%, and the price (today) is 208 per gram, about 914 dollars per ounce
taking gold as an example, full gold means that its content is not less than 99%, and full gold means that its content is not less than 999%. Because China's gold jewelry is still sold by weight, few manufacturers can meet the requirements of national standards because of fierce competition among manufacturers. In fact, people in the industry know that. There are also gold bars with tens of thousands of gold (that is, 9999 content 99.99). As gold jewelry, our national standard currently stipulates that the highest amount of gold jewelry is thousands of gold, that is to say, it is against national regulations to say that tens of thousands of gold Supplementary data 1: when purchasing gold jewelry, you should first recognize the quality inspection marks of gold jewelry. Most of the gold jewelry sold in the market are equipped with inspection marks of quality inspection institutions, which clearly indicate the gold content and weight of the jewelry. 999 gold is also called thousand gold, and the gold content is not less than 999 ‰; 990 gold is called full gold, and the gold content is not less than 990 ‰; The gold content of 22K gold shall not be lower than 916 ‰; The gold content of 18K gold shall not be less than 750 ‰; The gold content of 14K gold shall not be less than 585 ‰; The gold content of 9K GOLD is not less than 375 ‰
full Gold: gold with a gold content equal to or greater than 99%, commonly known as "29 gold". The imprint is "full gold", or "99 gold" or "G99", etc.
full Gold: gold with a gold content equal to or greater than 99.9%, commonly known as "39 gold". The imprint is "full gold", or "999 gold", or "g999", etc.
therefore, full gold is certainly full gold, but full gold is not necessarily full gold
it is particularly important to remind consumers that the colors of 18K gold jewelry include yellow, white and red. White 18 K gold is an alloy of gold and elements such as nickel, zinc, silver and copper. White K gold jewelry is not a platinum (Platinum) product
the imprint of gold jewelry includes manufacturer code, material and purity, such as X gold 990, xau990, X full gold, etc. Where, the letter X is the manufacturer code. When jewelry is made of precious metals with different materials or purity, the materials and purity should be expressed separately. When the jewelry cannot be printed due to reasons such as too fine or too small, it should be attached with a logo containing the imprint content
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2. There is a formula for the identification of clear gold in common cooked gold, that is, weigh the weight, look at the color, judge the rhyme, fold the soft and hard, and use acid points. Since the density of gold is obviously greater than that of common metals such as copper, silver, lead and zinc, it is about twice as heavy as silver and copper of the same volume. If the object is gold, it has a heavy feeling, which is people's "Gold Pendant hand", otherwise it is light
thousands of gold has its unique golden luster (except for low fineness). Pure gold will shine brightly under strong light, which is not available to other metals, including copper
when thrown on the ground, the high-quality thousand foot gold has no rhyme and elasticity, while the low-quality thousand foot gold has a slightly brighter sound, while the copper products have a loud sound. Therefore, according to the sound of percussion objects, it can help us to distinguish common metals from gold
thousand foot gold is characterized by good ductility and low hardness. Pure gold is soft and easy to fold, while copper is hard to fold. Or use a pin (nail can also be used) to draw it. If the force is not strong and the trace is obvious, it is gold, while copper is slightly strong and the trace is slightly poor. Folding soft and hard is only applicable to rings and gold wires, but it is more difficult for gold bars, gold coins and gold bricks. It is also effective to judge the authenticity of gold with the grinding head, but it is necessary to grind it in different directions of the tested object. If the colors of several grinding tracks are obviously different, there is no doubt that it is adulterated
if you don't believe in the above-mentioned identification methods of mature gold, you can only use nitric acid to spot it, that is, use nitric acid to spot its grinding path to judge its authenticity.

There are also many kinds of gold in the bank, depending on which product you buy. Generally speaking, gold bars have AU9999 content, but the purity of some handicraft products, especially handmade products (products similar to filigree inlay process), will be correspondingly reduced, which may be AU999 (thousand gold) or au99 (full gold).