Classification and identification of sterling silver jewelry

There are many classifications of sterling silver jewelry. According to the composition classification, it is mainly divided into pure silver jewelry and silver alloy jewelry. But many people have difficulty distinguishing these concepts. The detailed classification of sterling silver jewelry is as follows. 990 silver: 990 means that the silver content per thousand is not less than 990. Another logo is S990, which means the same. Those with silver content not less than 990 per thousand are called pure silver. Because it is too soft, it is not easy to cast into the desired jewelry shape, and it is simply worn and oxidized to black, and the processing cost is too high, so it is not very suitable for jewelry making. Generally used to make bracelets of sterling silver jewelry, there are 999 and 9999 points. 925 silver: refers to silver containing 92.5% silver, which is recognized as a pure silver standard in international standards. 925 means that the silver content is 92.5%. Due to the 7.5% alloy added to pure silver, the hardness is increased. 925 silver is plated with white rhodium, which can delay the yellowing and blackening characteristics under oxidation or vulcanization, and enhance the brightness after polishing. Professionally, 925 silver that is not plated with platinum is called 'plain silver'. It insists on silver white. Because it is not specially processed, the appearance of plain silver is relatively simple to oxidize in the air, but it is easy to clean. It is now common for sterling silver jewelry. Thai Silver: A specialty of Thailand, also known as 'Black SilverIt is not easy to change color and simple maintenance. It is to melt the mixture of silver and sulfur on the silverware to cover the loose and black surface (also considered as a kind of soaking black). It is in sharp contrast with the brightness of silver and has a special visual effect. This also enhances the surface hardness. Unique texture and color. But it does not mean that all Thai banks are looking for an old-fashioned effect. There are many styles that have not been soaked in black, and they have maintained the bright white of silver. Of course, there are some non-sterling silver jewelry on the market. These products have complicated shapes, but they are not classified as pure silver jewelry. They are classified as follows: Tibetan silver: generally does not contain silver, it is an elegant name for cupronickel (copper-nickel alloy), traditionally The Tibetan silver is 30% silver and 70% copper, but even such traditionally crafted “Tibetan silver” is no longer available on the market, and it is completely replaced by silver-plated copper-nickel alloy. Fake silver: It is made of other metals with a thin layer of silver. In the jewelry department appraisal, because only a part of the surface layer was examined, it was very simply identified as 99 pure silver or 925 silver silver jewelry because it was plated with a thin layer of 99 silver or 925 silver. It is advisable to inspect the silver jewellery by cutting a section of the silver jewellery from the center and inspecting the inner part of the center. Miao silver: Miao silver is made of silver-plated copper products second only to silver. It is made with pure traditional craftsmanship. The style is exaggerated, bold, reveals individuality, is rough and does not care about details. The appearance is 'intentionally oxidized, Seeking a kind of 'ancient' and 'old' 'ancient silver' effect, deeply loved by everyone, even foreigners also love these Miao silver jewelry. Learning to distinguish sterling silver jewelry is particularly important in the purchase process. Only when you have a certain ability to distinguish, can you prevent your investment from being deceived. How to distinguish sterling silver jewelry? 1. Color identification method: Observed by eyes, it looks white, shiny, finely crafted, and has a shop number printed on the jewelry. It is pure silver jewelry with high color; the color difference, color difference and matt are mostly fake Silver jewelry. 2. Bending method: lightly fold silver jewelry by hand, easy to bend and not easy to break the color; stiff, far-fetched, low color; after bending or knocking with a hammer for a few times, it will be cracked as silver-clad jewelry; Lightly folded and easily broken are fakes. 3. Throwing method: Throw the silver jewelry from top to bottom on the table. Those with low bounce and stable sound are pure silver jewelry with high color; those with high jumping and bright sound on the table are fake. Silver jewelry of fine or low color. 4. Nitric acid identification method: Use a glass rod to drop nitric acid on the mouth of the silver jewelry file. The color of pure silver jewelry with brown beige and greenish color is higher; the color of dark green and black is lower. Previous page: How to clean silver jewelry more shiny