What does au9999 mean “Au9999”, is a method of expressing the purity of gold stipulated by the state. Gold jewelry must bear this kind of mark. “Au” is the symbol of gold’s chemical element. It shows that this metal ornament is made of gold. “9999” indicates the purity of gold (ie “gold content”), adică, the gold content of this ornament is 99.99%. This kind of gold is commonly known as “Four Nine Gold”, the golden brick in the general treasury.
Gold with a gold content equal to or greater than 999.9‰ is commonly referred to as “Wanzu Gold Series” sau “Wanzu Gold” sau “999.9 Gold”. Prin urmare, the million gold is definitely thousands of gold, but the thousand gold is not necessarily the gold. In the production process of AU9999 gold jewelry, using the characteristics of high temperature autolysis of gold, using laser laser spot welding, touch welding technology, to achieve autolysis welding of gold, without adding any auxiliary materials, abandoning the traditional process of “adding flux” , So as to ensure that the purity of gold jewelry does not decrease, to achieve the purity of raw materials.
What is the difference between 9999 gold and 999 aur? The digital sign of gold represents its purity, 999 is thousands of gold, and the purity of gold is 999/1000; 9999 is 10,000 aur, representing the purity of gold is 10,000 Thousand nine hundred and ninety, a difference of nine ten thousandths. Diferența dintre 999 şi 9999 is mainly the purity. 999 is 99.9% aur, şi 9999 is 99.99% aur. Cu toate acestea, when making jewelry, 99.9% is the highest because it needs welding. If jewelry 9999 is fooled, gold bars Generally 9999.
In fact, the prices of 999 şi 9999 are basically the same. Generally, the raw materials of large-scale jewelry are 9999 gold nuggets, and the jewelry can only be made of 999 thousand gold or pure gold.
The national standard of 9999 gold and 999 only defines 999 thousand gold, which means that the thousand gold is the highest purity. Even if 9999 gold is sold, it cannot be detected at the time of purchase, so we can only say that 9999 is a kind of The high-purity gold mentioned in the market is called “million-foot gold” by the public, and it sounds higher than “thousand-foot gold”. In fact, when you understand the percentage mentioned above, you know that no matter how high the percentage is, there will be no 100% aur pur.
In fact, for the jewelry we wear, 999 gold is enough, no matter from the color, purity, and craft thousands of gold has reached the highest level of jewelry, usually wearing some au750 material jewelry is also a good choice. If you are interested in 9999 aur, you may wish to choose this kind of purity of precious metals when collecting.