1. Color discrimination: When observed with eyes, silver ornaments are generally marked with the English abbreviation of silver ("S" or "Sterling"). The mark of standard silver is S925. The imprint of foot silver is S990. But there are also many countries that don't print paper money on silver ornaments.

2, bending method: gently fold the silver jewelry by hand, easy to bend and not easy to break color; Stiff, barely folded colors are lower; Silver-plated jewelry will crack if it is bent or knocked a few times with a hammer; Those that can't stand a light discount and are easy to break are fakes.

3. Throw method: throw the silver jewelry on the table from top to bottom, and the silver jewelry with low rebound and smooth sound is of high quality; High-pitched, shrill voice silver jewelry thrown on the table, which is fake or of low quality.

4. Nitric acid identification method: use a glass rod to drop nitric acid on the file mouth of silver jewelry, which is brown rice color and slightly green. Dark green and black are light colors.

5, color matching method: silver jewelry is mostly yellowish silvery white, showing a soft metallic luster. Due to easy oxidation, the color will turn dark yellow and white after a long time.

6. Weighing method: the density of silver is 10.53g/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 platinum jewelry, K gold jewelry or imitation silver jewelry.

7. Hardness method: The hardness of silver is lower than that of copper, but higher than that of lead and tin. It can be checked by marking the 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.

Baidu encyclopedia-silver ornaments