From the value and preservation of jewelry, 925 silver is better. 925 silver is a precious metal, in which the content of silver is relatively high, it has certain oxidation resistance, and its color is white and bright, while the value of the alloy is relatively low. It is synthesized by two or more kinds of metallic and nonmetallic substances through special treatment, and has certain metallic characteristics.
Alloy and 925 silver can be distinguished by luster, color, composition and marking. The main component of 925 silver is silver, which contains 92.5% silver. It is an international standard silver and is suitable for making silver ornaments. However, the metal composition of the alloy is complex, consisting of many metals and nonmetals, which has certain wear resistance and low melting point.
Silver ornament sign
The silver content of silver jewelry must be accurately marked, and consumers should check whether there is the word "S925" on the jewelry when buying. "S" is the first letter of the English word silver, and "925" is the symbol of pure silver. As long as there is the word "S925", you can ensure that you buy genuine sterling silver jewelry. The imprint of the ancestral sound is "S990".
Thousands of silver or S, such as silver 800 or S800, S9909 or foot silver. National standards stipulate that 990 silver, 925 silver and 800 silver can be used to make silver ornaments. Our national standard GB/T 1 1887-2000 was revised and formulated on the basis of implementing GB/T11989.
Reference to the above content: Baidu Encyclopedia-Silver