Silver ornaments are generally stamped with the English abbreviation of silver ("S" or "Sterling"). The mark of standard silver is S925 or 9.25 or 925. The imprint of foot silver is S990. But there are also many countries that don't print paper money on silver ornaments. Or 9.25925 marks. There are also thousands of silver labels or S999.

2, check the color

Silver ornaments are mostly yellowish silvery white with a soft metallic luster. Due to easy oxidation, the color will turn dark yellow and white after a long time.

Step 3 consider

The density of silver is10.53g/cm3. Smaller than platinum and gold, it won't fall off by hand. Steel needles can be marked or bent. In this way, it can be distinguished from German platinum, K gold or imitation silver jewelry.

4, check the hardness

The hardness of silver is lower than that of copper, but higher than that of lead and tin, so it can be tested by marking jewelry in an inconspicuous place with a pin. If the needle slips, it is difficult to leave traces on the surface, which can be judged as copper jewelry; If it is made of lead and tin, the trace is obvious; If the object has traces but is not obvious, it can be preliminarily judged as silver jewelry.

5. Listen to this poem

Sterling silver jewelry fell to the ground and was not elastic. The lower the color, the lower the sound, and the sharper and higher the rhyming sound; If it is made of copper, its sound is high and sharp, and its rhyme is short and short; If it is made of lead and tin, the sound of falling to the ground is dull, short and inelastic.

Extended data:

Silver jewelry maintenance:

Silver is a relatively active precious metal, which easily reacts with sulfur or hydrogen sulfide in the air to generate black silver sulfide. This is also the reason why silver jewelry will turn black after use. Long-term use of silver jewelry has little friction on the surface, and this phenomenon of blackening is more serious after being placed. The material of many silver ornaments is often silver-copper alloy, and this kind of silver ornaments should pay more attention to anticorrosion. In order to prevent silver jewelry from blackening, there are three common methods:

(1) surface treatment: this is an industrial method, which is not easy for individuals to adopt.

(2) Surface coating treatment: coat a transparent clear paint film on the jewelry surface to isolate silver from the outside air. Ordinary wearers can apply colorless and transparent nail polish to jewelry. This method is particularly simple and does not affect the luster of silver jewelry. According to the wearer's specific wearing situation, determine the time interval for applying nail polish or transparent paint film.

Because of the different working environment, people who wear fast can apply it once a week, while those who rarely touch hard objects or wear jewelry for housework can apply it once every half a month or longer. Jewelry that is not used for a long time should also be coated on the surface.

(3) Always keep the silver jewelry clean and dry, try not to let the silver jewelry come into contact with sulfur-containing chemical gases, and do not use sulfur soap to clean the silver jewelry. Silver jewelry should be stored in a sealed and dry place when not in use.

References:

Baidu encyclopedia-silver jewelry