Gold jewelry has always been the favorite of many people. So, the question is, how do you master some techniques to identify the jewelry you bought? Xiaobian to teach you!
First, look at the color
The higher the purity of gold, the darker the color. The higher the purity, the darker the color.
Gold with a deep red-yellow color, with a purity of over 95%;
Showing a light reddish yellow gold with a purity of 90-95%;
Showing pale yellow gold; purity is 80-85%;
Showing a blue-yellow gold with a purity of 65-70%;
Gold with excellent greenish white light, purity is only 50-60%;
The gold is yellowish and white, and the purity is not even 50%.
Second, look at the hardness
In costume dramas, there is often such a plot. Some people use their teeth to bite gold to distinguish the true and false of gold. Pure gold is low in 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. (except 3D hard gold)
Third, use fire to burn
Burn the jewellery with fire and observe the color change after cooling.
If it is pure gold, the surface is still golden yellow after burning;
If the color is black, it is not pure gold.
However, be careful not to burn the jewelry when burning.
Fourth, listen to the sound
Drop the pure gold jewelry on the ground and it will make a loud noise.
The fake or poorly colored gold falls on the ground, and it will make a sound of Dangdang.
Method 4 is only applicable to the local tyrants on the tall, do not imitate the silk!
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