fair trade jewelry makers wholesale What does AG999 mean on the commemorative coin?

cz diamond jewelry wholesale AG is a symbol of silver, and AG999 refers to 999%of the silver content. Argentum is a type of transitional metal. Chemical symbol AG. Silver was one of the metals known and used in ancient times, and was an important precious metal. Silver has a single quality in nature, but most of them exist in silver ore in the form of compliance.
The physical and chemical properties of the silver are relatively stable, the heat conduction and electrical conductivity are very good, soft, and rich in ductility. Its reflective rate is extremely high, up to 99%. There are many important purposes. Foot silver in 999 silver jewelry can be called sterling silver. The content is the number behind the metal symbol, and 999 is 99.9%(No. 3 silver). If you are lucky, the content can reach 99.95%, which is No. 2 silver.
Extension information:
Foot silver: Foot silver with a silver content of not less than 990. Generally processing into silver jewelry such as bracelets, pendants, long -life locks, and other silver decorations usually have several signs, one is S99, one is S990, S is the first letter of English word Silver, which represents silver. The content is 999, 990 and 925.
silver white, soft and bright, is a favorite decoration of ethnic minorities, Buddhism and Islam. Silver jewelry is also the preferred gift from the people of all ethnic groups across the country to newborn babies. Recently, under the influence of the retro trend of European and American people, European and American people wear silver -inlaid blue turquoise jewelry that is easy to oxidize and black, giving people a reverie of infinitely beautiful in ancient civilization.
In China, sterling silver jewelry has gradually become a love choice for modern fashion women. Silver is one of the metals that have been known in ancient times. Silver is more lively. Although it is about 15 times that of gold in the crust, it rarely exists in a single texture, so its discovery is late than gold.
Reference materials: Baidu Encyclopedia-Foot Silver

engraved jewelry box wholesale AG is a symbol of silver, and AG999 refers to 999%of the silver content.
A. Silver is one of the precious metals, symbol AG, and English is Silver. Silver is silver -white, relative density of 10.49, melting point (961 ° C), insoluble in alkali and most organic acids, easily dissolved in nitric acid and hot sulfuric acid. 925 silver was 92.5% silver added 7.5% copper and other alloys, which improved the hardness and gloss of the silver.
B. The color of silver is represented by thousands of points. Foot silver: It contains not less than 990 ‰, and the mark is foot silver or S990, silver 990.
C. The content of silver in the crust is very small, only 0.07ppm, and there is a single natural silver in nature, but it is mainly the state of the compound. The content of elements in the sun: (PPM) 0.001 elements in seawater content: (PPM) Pacific surface 0.0000001.

D. Silver ore mainly has Hui Silver Mine, followed by corner mines, and natural silver. The silver ore and salt and water are hot, and then combined with mercury as silver and mercury, steaming mercury and getting silver. Or it is made by adding lead or zinc by silver ore with a cyanide -alkali -based immersion.
925 Silver: The silver contains no less than 925 ‰, and the mark is S925 or silver 925.

wholesale gift box jewelry factory Element name: Silver Element Symbol: AG
AG999 indicates 999 per thousand of thousands of silver content