1, look at the target. If there is "Pt" on the jewelry or the words "Platnum" or "Plat" are printed, it is platinum; If there is an "s" or "silver", it is silver.

2. Weighing method. The specific gravity of platinum iron is 2 1.4, and that of silver is 10.49. Compared with the same volume of materials, the weight of platinum is almost twice that of silver.

3. Appearance comparison method. Platinum is gray and hard; And silver is white, delicate and smooth, softer than platinum.

4. Fire method. After high temperature firing and cooling, the color of platinum remains unchanged, and it is still gray; Silver becomes moist red or black red.

5. Chemical identification method. Grinding platinum on the touchstone, dropping nitric acid and hydrochloric acid on the touchstone, and if there is a substance, it is platinum; Grind silver on the touchstone, drop a few drops of nitric acid and rinse with water. If this substance disappears, it is silver.

Extended data:

Precautions for sterling silver jewelry:

First, the best way to maintain silver jewelry is to wear it every day, because human oil can make it produce a natural and moist luster.

Second, when wearing silver ornaments, don't always touch or even scratch the surface of silver ornaments, so as not to destroy the electroplating protective layer on the surface of silver ornaments, damage the silver ornaments and accelerate their oxidation.

Third, don't wear other metal jewelry when wearing silver jewelry, and take off the silver jewelry when doing rough work to avoid collision, deformation or abrasion.

Fourth, avoid putting it with hair gel, perfume and skin care products.

5. Silver ornaments should be completely sealed when not in use.

Six, after each wear, you can gently wipe the surface with cotton cloth or paper towel to remove water stains and dirt, and then put it in a sealed bag to avoid contact with air.

The properties of platinum are very stable, and it will not deteriorate or fade due to daily wear, and its luster is consistent. Even if you come into contact with common acidic substances in life, such as sulfur in hot springs, bleach, chlorine in swimming pools, or sweat, it will not be affected, so you can wear platinum jewelry at any time with great confidence.

Baidu encyclopedia-silver

Baidu Encyclopedia-Platinum