Sihai network

How to distinguish the authenticity of 999 pure silver 2018 999 pure silver price

How to distinguish the authenticity of 999 pure silver 2018 999 pure silver price

4hw.com.cn: pure silver is a precious metal next to gold and a global hard currency. It's a good choice for jewelry and investment. How much is 999 pure silver per gram in 2018? How to judge the purity of silver? Let's have a look with Xiaobian!

How to identify the authenticity of 999 pure silver

First of all, we need to check the stamp. According to the national standard 'gb1187-8p', the one with silver content of no less than 925 & permil; is called 925 silver, with silver stamp of 925; the one with silver content of no less than 990 & permil; is called full silver, with full Silver stamp, or with silver stamp of 990.

Secondly, the higher the purity is, the whiter the silver is, the more delicate the surface is, the more even it is, and the more polished it is. If it contains lead, the surface is cyan gray; if it contains copper, the surface is rough and dry. Although the oxidized silver has' black rust 'on its surface, its color is black and bright, while lead, tin and copper have no luster.

As the density of silver is slightly larger than that of common metals, generally speaking: 'aluminum is light, silver is heavy, and copper is neither light nor heavy. "So weighing can make a preliminary judgment on whether it is silver. In addition, the hardness of silver is lower than that of copper, but larger than that of lead and tin. Therefore, the pin can be used to slightly force the surface of the object for testing. If there are traces but not obvious, it can be preliminarily determined as silver jewelry.

For the common counterfeit silver in the market, manager Zhao said that the counterfeit silver is generally made of white copper, lead, tin, aluminum, etc., which is characterized by: the appearance of white copper is gray white, the stubble is brick gray, green rust; the lead is gray blue, soft, which can be marked with nails; the tin is silver white, soft; the aluminum is white gray, soft, light weight.

Price per gram of sterling silver bracelet in 2018

The real-time price of pure silver in the market is 3.56 yuan / g.

What is 999 Silver?

The highest purity is 999, which is called Qianfu silver. The silver content is 99.9%. It is easy to oxidize and turn black. You need to wear it carefully

The next purity is 990, which is called foot silver. It contains 90% silver

999 and 990 are suitable for making plain silver jewelry because of their high silver content and softness.

The most common one is 925 silver, which is called international standard silver. It is recognized as the lowest standard of pure silver in the world.

The 925 silver with 7.5% copper alloy is more suitable for flower jewelry. The finished silver ornaments are usually electroplated and polished, so they have stronger oxidation resistance than 999 and 990. However, the silver ornaments need to be maintained and can not be worn without care

S is the mark of silver. The ornament should have the mark of s999, S990, S925, or thousands of feet of silver or feet of silver