Traditional Culture Encyclopedia - Photography major - Come on, is it true that China gold is sold?
Come on, is it true that China gold is sold?
Three practical methods to identify the authenticity of gold;
1, with magnet
First of all, we need to know the work of gold. Gold is not made of copper or iron. If the gold jewelry you buy is firmly attracted by the magnet, then 100% can say that such gold jewelry is not pure gold. However, some fake gold can't attract magnets, but it doesn't rule out real gold jewelry. You need to try the thickest part of gold jewelry. Because the weight of a gram of gold jewelry is very expensive, such as a gold jewelry necklace, we use magnets to adsorb it at the thickest position of the gold jewelry necklace.
Step 2 Use unglazed ceramic cups
First, put your jewelry in an unglazed ceramic plate. Please note that if your gold jewelry is real gold, it will leave gold stripes on the unglazed ceramic plate, and if it is fake, it will turn black.
Step 3 use nitric acid
This is also the method used by most jewelers for their own internal testing. The operation method is simple. First, let's take a drop of nitric acid and drop it on the gold jewelry to see if it reacts. If nitric acid drops on gold ornaments, it will produce a green reaction, then it is a fake. If the reaction seen by dropping nitric acid on gold jewelry is milky white, then this gold jewelry may be gold-plated pure silver, not real gold jewelry. If nitric acid drops on the gold jewelry and there is no chemical reaction, it means that your gold jewelry is real gold.
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