Why is it the same as sterling silver jewelry, but the price is very different. How to distinguish between true and false goods

Silver Knowledge and its quality identification

The silver has white luster and is easy to oxidize. It is widely used in jewelry and decorations. The reflectance of silver to visible light is 91 %, while platinum is 69 % and 钯 57 %. The high reflectivity shows high brightness. Therefore, the white gloss of the silver is very eye -catching.
(1) Silver jewelry classification

The classification of silver jewelry. According to the composition classification, it is mainly divided into foot silver jewelry and silver alloy ornaments:

1. Foot silver jewelry. The surface is smooth, silver -white, good ductility, and looks elegant and generous.

2. Silver alloy jewelry. The surface of the silver alloy jewelry is bright, there are still the characteristics of silver white, hardness and ductility, and convenient processing, and it looks exquisite, delicate, and decorated. The silver alloy for jewelry is mainly silver and copper alloy, usually with a silver content of 92.5 %. In addition, there are lower silver -containing jewelry, especially some national -style tablets, which are very beautiful and delicate. 900 alloys are called currency silver, and the accessories are 800 or more alloys. The advantages of silver and copper alloy are harder than silver; thermal treatment can increase hardness, reduce the melting point, and improve the castability. In order to solve this problem, people did a lot of research and found that the cost of silver crickets was the lowest. In addition, in recent years, many jewelry manufacturers have introduced electroplating technology into silver jewelry processing, plating metals such as plating on the surface of the jewelry to improve the wear resistance and corrosion resistance of jewelry.

(2) The main imitation of silver jewelry

1. Silver -plated jewelry

The sterilization of silver -plated jewelry is a alloy material with copper -based metal. It often adds metals such as zinc and nickel. Corruption is better than copper and the nature is similar to K gold.

2. Packal silver

is a pack of silver to wrap silver on the surface of metal products with mechanical or other methods.

(3) The inspection of silver jewelry

1. The logo

The authentic sterling silver jewelry products will be engraved with S925, and 99 silver is engraved with S990. In the product introduction, there are detailed sizes, heavy weight, materials, etc.
Mimin silver generally does not engrav, and there is no detailed product introduction.

2. Observation quality

is mainly the overall shape and processing quality of the jewelry.

3. Jewelry weight

silver jewelry is calculated based on weight and processing costs. The weight of the jewelry is one of the important indicators. The measurement unit of the jewelry weight according to the standard is gram.

4. Silver content

The silver content in jewelry is an important indicator of its quality. There are many types of silver content testing methods, which can be divided into chemical analysis methods and instrument analysis methods. Depending on whether the jewelry is damaged during the testing process, it can be divided into non -destructive detection method and damage testing method. The daily inspection of the jewelry quality supervision department is generally based on non -destructive testing method. Utilize large instrument analysis.

(4) The physical properties of silver

Gels: silver white

Densive: 10.5g / cm3

Hardness: Mohs Hardness 2.7

This reflectance: The reflection rate can reach 91 %

specifically explained that all the sterling silver jewelry sold by the relic jewelry wholesale network is The authentic sterling silver can withstand the authoritative inspection of regular and authoritative inspection agencies, you can rest assured to buy!