First, sterling silver:
Pure silver is a metallic silver with a content close to 100%. However, since silver is an active metal, it is easy to react with sulfur in the air to form silver sulfide and turn it black. Therefore, "sterling silver" in life generally refers to silver with a content of 99.9% or 925 with a content of 92.5%. Sterling silver. After making the jewelry, it will be stamped: Ag9999, Ag999, Ag990, S999, S990, S925.
Second, Miao silver:
Miaoyin itself refers to sterling silver, an important jewellery and wedding supplies in the Miao area for a long time. But now the Miao silver is not pure silver, the other main component is copper, the amount of silver is not high. Its main feature is the hand-made production in the Miao area, with beautiful patterns and rich meanings. The Miao silver jewelry seen in the market has almost no silver components, and is generally divided into three categories:
1. Brass-based "Miaoyin":
It is mainly distributed in Yunnan Province, such as the silver jewelry of Xinhua Village, Heqing County, Dali City, Yunnan Province. Heqing's silver jewelry is mainly composed of brass, and some sterling silver jewelry enters the local market through other channels.
2. "Miaoyin" based on white copper:
It is mainly distributed in the southeastern part of Guizhou Province, such as the Silversmith Village near Qianhu Miao Village in Kaili City, Guizhou Province. The silver and silver jewelry of Yinshi Village is mainly composed of white copper. It is processed by electroplating, waxing and coloring to form a distinctive Guizhou Miaoyin jewelry.
3. "Miaoyin" based on red copper:
Also known as copper, it has good electrical conductivity and thermal conductivity, excellent plasticity, easy to hot and cold pressure processing, and is widely used in the manufacture of wires, cables, brushes, electric sparks, etc. . Although the hardness of red copper is poor, it can be made into various tools and decorations directly after being beaten. â€
Miao silver jewelry has no mark.
Third, Tibetan silver:
Tibetan silver is a name. It is actually an alloy. In Tibetans, Tibetan silver is actually white copper. Tibetan silver is the nickname of white copper (copper-nickel alloy). The traditional Tibetan silver in Tibetan silver is 30% silver plus 70% copper. Because the silver content is still too low, it is no longer seen on the market, and it is replaced by completely white copper.
There are no imprints on Tibetan silver jewelry.
Fourth, Thai silver:
Thai silver, the concept is 925 sterling silver, (Thai silver is a kind of old retro process, containing 92.5%, 99%, 99.9%, low purity) is just a special name for a special process. Also known as "Wuyin", it is a mixture of silver and sulfur on silver jewelry, and a cover layer is formed in a vitreous state. The black-silver cover layer is loose and black, which is in sharp contrast with the smooth silver of silver, resulting in special visual effects. Due to the special anti-old treatment, the black and silver jewelry not only does not change color for a long time, but also the surface hardness is greatly enhanced. The unique texture and color make this jewelry rough and simple. Thai silver jewelry is stamped with 925 or S925.
Five, silver:
Grain silver: The full name is “the Hubu Kuiping Ten-grain silverâ€, which is the standard color of the legal silver in the Qing Dynasty. The Qing dynasty stipulates that the payment of money and grain is based on silver. The other silver must be calculated according to the color. It is mainly a purity unit, and the purity of silver is 93.5374%.
Six, full silver:
Full silver: Silver with a silver content of not less than 990. It is a silver jewelry with a purity of 99%. The imprint is S990.
Seven, plain silver:
92.5% silver + 7.5% copper alloy is an internationally recognized standard for pure silver. It is usually plated with platinum (one or several kinds of enamel, 18K white gold, silver, nickel, copper, palladium, etc.) to prevent oxidation or Vulcanized to yellow and black, without platinum-plated 925 silver, known as "silver." Of course, 990 pure silver is not plated with platinum, also called "sugar silver."
to sum up:
Sterling silver is a range: contains 925 sterling silver, 990 sterling silver, 999 sterling silver;
Miaoyin and Tibetan silver are not silver;
Thai silver is a special process of 925 sterling silver;
Silver is a pure silver content of 93.5374%;
Full silver is a 99% pure silver jewelry;
Plain silver is 925 or 990 sterling silver jewelry without plating.
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