There are a lot of gold jewellery on the market, and there are some differences in the gold jewellery sold by different jewelry stores. For example, the price is different and the density is different. So how do you identify the purity of gold jewelry? Jewelry bag manufacturers will teach you 5 methods.
1.Look at the color
Jewelry bag manufacturers teach you the easiest way to see the color. The higher the purity of gold smelting, the brighter and deeper the color will be.
2. Tooth bite method
The bite of gold is actually testing the hardness of gold. This method can filter some gold with low purity. Pure gold has a low hardness and will leave a tooth print if bitten with a tooth. Therefore, when identifying pure gold, you can try its hardness. If the hardness is too high, it cannot be pure gold.
3. Listen to the sound
Jewelry bag manufacturers believe that the purity of gold and pure gold jewelry is very high, it is very stable, the sound of jewelry falling or colliding with each other will be low and boring, it is the sound of "bar 嗒", and it will not move when it falls; When the purity is low or even when the fake gold falls or touches each other, it will emit a "dangdang" metal sound, sometimes it will beat the sound, and it will beat after landing.
4. Fire method
Pure gold is formed by extreme high temperature extraction and cooling. Gold does not change color when it meets fire, but in general, iron ore will turn black when it meets fire.
5. Density test
Note that the density of gold in different purity is also different: 14K gold density is equivalent to 12.9 to 14.6 g / ml; yellow 18K gold density is equivalent to 15.2 to 15.9 g / ml; white 18K gold density is equivalent to 14.7 to 16.9 g / ml; 22K gold density Equivalent to 17.7-17 to 8 g / ml.