Because gold and silver have relatively stable physical and chemical properties and exist as simple elements in nature, producing relatively pure gold and silver requires no complex techniques. Therefore, they were discovered very early and used as currency for transactions. With the passage of time, the silver we encounter in real life is no longer exclusively pure silver. Humans have used their ingenuity to mix silver with other materials, giving it numerous advantages, such as increased hardness and resistance to oxidation. There are many types of silver available on the market today, including 10,000-pure silver, 990 silver, 925 silver, Thai silver, Miao silver, Tibetan silver, and more.
When it comes to silver, pure silver is often the first thing that comes to mind, but 925 silver is currently the most popular. While pure silver is a popular choice, and many children and women wear bracelets made of it, it also has its drawbacks, such as its tendency to oxidize and its lack of hardness. Therefore, the pure silver we see in everyday life is mostly bracelets. Because bracelets are thick enough, even though pure silver is relatively soft, they won't deform with the slightest touch.
However, pure silver is not suitable for delicate items, such as earrings. Therefore, the working people used their ingenuity to mix silver with other substances to increase its hardness. 925 silver is made by adding other metals, making the silver content 92.5% and the other metals 7.5%. This makes the silver hard enough to be used in some fine jewelry.
