Five ways to distinguish between silver and platinum

Comparison method:

Platinum is grayish white to the naked eye, with a hard texture and a hardness of 4.3. Silver is visible to the naked eye, the color is clean white, the texture is more delicate and smooth, the hardness is lower than that of platinum, and the hardness is 2.7.

Identify the seal:

Since each piece of jewelry must be engraved with a seal of composition, so if you see Pt, or see Platinum, Plat, it is platinum; if you see S, or see Silver, it is silver. In addition, note the copper silver plated symbol, which is SF.

weigh:

This method can be used if the seal is blurred or the seal has been truncated. The density of platinum is high, the specific gravity is 21.4 kg/dm3, and the specific gravity of silver is 10.49 kg/dm3. In this way, the same volume of silver weighs only half of platinum, and the two are easier to distinguish.

Cremation discrimination:

Sometimes when you encounter less material, the weight on your hand is not obvious, and there is no seal, then you have to use this method. Platinum is heated or fired. After cooling, the color is constant; while silver is heated or fired, after cooling, the color is red or black.

Chemical method:

Platinum is ground on the touchstone, and then a few drops of the droplet are mixed with nitric acid and hydrochloric acid. If the wear scar is present, it means platinum. As for the color, there is some difference in color; if the droplet is on silver, grind The marks will be lost.

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