How is the silver jewelry made?

Silver ornaments refer to all kinds of decorations made of silver. Silver is one of the precious metals, which is silvery white. Silver ornaments are processed by various processing techniques, and there are many kinds of silver ornaments, which are basically divided into five categories: earrings, necklaces, hand ornaments, foot ornaments and costumes.

After the founding of New China, especially since the reform and opening up, traditional silverware has been loved by many people, especially in some minority areas, such as the silverware industry of Miao nationality. There is also a film of the same name "Silver Jewelry".

1. silver is one of the precious metals, with the symbol Ag, and the English word is Silver. Silver is silvery white with a relative density of 10.49 and a melting point of (96 1℃). Insoluble in alkali and most organic acids, soluble in nitric acid and hot sulfuric acid, combined with sulfur dioxide in the air, it turns brown Ag2S. 925 silver is an alloy of 92.5% silver and 7.5% copper, which improves the hardness and luster of silver.

The purity of silver is expressed in parts per thousand. Foot silver: the silver content is not less than 990‰, and the imprint is foot silver or S990 plus silver 990.

The content of C silver in the earth's crust is very small, accounting for only 0.07ppm. There is simple natural silver in nature, but it mainly exists as a compound. Element content in the sun: (ppm) 0.00 1 element content in seawater: (ppm) 0.00000 1 on the surface of the Pacific Ocean.

The main silver deposit is argentite, followed by amphibole and natural silver. Silver is obtained by heating silver ore with salt and water, then combining with mercury to form a mixture of silver and mercury, and evaporating mercury. Or by leaching silver ore with cyanide alkali and adding lead or zinc to precipitate silver.

925 Silver: The silver content is not less than 925‰, and the mark is S925 or Silver 925.

Difference: 925 sterling silver is the international standard of silver jewelry. Because of its enhanced hardness, it is mainly used to make fashionable silver jewelry with complicated technology, while foot silver is soft and not suitable for setting gems or fine styles, and is generally used to make traditional children's lock bracelets and old people's bracelets.