Jewelry silver tips

The fineness of silver (1) sterling silver: also known as Baoyin, the theory is 100%, but it is difficult to achieve in practice, generally not less than 99% is called pure silver.

(2) Foot silver: Also known as 98 silver, the English symbol is 980S, ie 98% silver, 2% copper.

(3) 92.5 Silver: English symbol 925S 925 silver jewelry, that is, 92.5% silver, 7.5% copper.

(4) 80 silver: also known as the tide of silver, tiffany jewelry English symbol is 800S, 80% hard silver, 20% copper.

Jewelry silver and silver in the lowest price of precious metals, rayban sunglasses is a few tens of gold. In jewelry design, almost no consideration is given to its cost factor, so many avant-garde designs can be designed. exaggeration. luxury. Thick jewellery to meet the young people who are popular but have limited economic capabilities.

Jewelry silver can be divided into two categories: pure silver and silver. They are as follows:

Silver, which has a silver content of not less than 990, contains silver. Because it is too soft and easy to wear, it is mostly used to make silver coins and is not suitable for jewelry making.

Silver in grain silver has a silver scale of not less than 925. Also known as ``925 silver``, silver is usually mixed with 92.5% silver and 7.5% copper. Due to the incorporation of copper, the finished product's luster after polishing is brighter than pure silver and is therefore often used as jewelry material and silverware.

Calculate the formula for the amount of silver in the grain:

How many grams of copper do you need to add to 100 grams of sterling silver to achieve the standard 925 grain silver? We can use the following method to calculate, if the amount of copper added is X grams, the formula is as follows:

925:75=100:XX=75x100/925=8.1 grams So 100 grams of pure silver added 8.1 grams of copper to become the standard 925 grain silver.

Silver does not oxidize when heated in the air, but when there is moisture and in the presence of hydrogen, or under the action of hydrogen, silver will become black and black. Silver contact with eggs and other foods or rubber containing * will also be black, generally speaking, the oxidation of silver, in fact, is the silver *. There is now a special sterling silver sterling silver mouthpiece used for silver jewelry to slow down the process of blackening, but it is customarily called "antioxidant silver."

Silver jewellery is printed in silver with a purity of one thousandth or silver s. Example: Silver 925, S925.