time:2022-08-25 source:sznbone Views:
Sterling silver is one of the precious metals second only to gold. Although the price is not as high as platinum or gold, it is still far more expensive than tin, lead and other metals. However, sterling silver is too soft and easy to deform, so other alloys are usually added. To increase the hardness, the alloys added in different countries are different, so as long as the international standard sterling silver content exceeds 925/1000, it is considered sterling silver.
Like gold, silver is a precious metal with a long history of application, with a history of more than 4,000 years. Due to the unique and excellent characteristics of silver, people have endowed it with dual value of currency and decoration. The pound sterling and the silver dollar used before liberation in our country are silver-based silver and copper alloys. Silver-white, with soft and bright luster, it is a favorite ornament of ethnic minorities, Buddhists and Muslims. Silver jewelry is also the first choice gift given to newborn babies by people of all ethnic groups in the country. Under the influence of the retro trend of thinking, European and American people wear silver-set light blue turquoise jewelry that is easily oxidized and blackened, which brings people a reverie of the infinite beauty of ancient civilization. In China, sterling silver jewelry has gradually become the favorite choice of modern fashion women. The properties of silver Silver, the element symbol is Ag. It is a silver-white precious metal extracted from natural silver and other silver minerals. The hardness is 2.7, the density is 10.53 g/cm3, and it has good electrical conductivity, ductility and thermal conductivity. It is mostly used in the electronics industry, medical and photographic industries, and its main use is to make jewelry, utensils and religious tokens. How to identify silver jewelry Silver is an indispensable combination metal in K gold jewelry, but as silver-based jewelry, it is mainly a kind of high-purity "standard silver". The hardness of silver is 2.7. In order to improve its hardness and obtain the best molding effect, it is necessary to add 7.5% copper to silver when making jewelry. This alloy containing 92.5% silver and 7.5% copper is called standard silver internationally. Also known as Sterling in the UK. In addition, there are pure silver jewelry with a silver content of 99% on the market.