wholesale guangzhou jewelry purchase outsourcing How to identify craft gold?

wholesale gold charm jewelry Look at the color. According to the different gloss and color of gold, you can generally distinguish pure gold, K gold, real gold, fake gold. The old -fashioned old -fashioned "Qiqing Eight Yellow Nine Five Red and yellow leucorrhea gray pairs of gold" circulating is the purity of the gold.
Themark. Domestic gold jewelry must be used to be killed in accordance with regulations. It indicates that 24K represents a purity of more than 99.6%, indicating that 18K means that the purity is above 75%.
This look at hardness. High -colored gold can leave traces with large head needles or nails. More than 97%of the gold jewelry, after two or three times, wrinkles appeared at the bend, also called fish scales; about 95%of gold jewelry, it feels hard when bending, and the fish scales are not obvious; The jewelry is very hard when the bending is bent, and there is no fish scale pattern; the gold jewelry containing more impurities, the bend is twice or three times to break;
listening to the sound. The real gold with more than 99%of the real gold is thrown on the hard ground, and it will make a sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is made, and there are surplus sounds. The proportion of gold is 19.3g/cm3, which has a large relationship with the proportion. When the proportion is close to 19.3, the higher the pure gold. Looking at whether it is commensurate with the size of the size, the shape is large and lighter may be adulterated. But generally in the hands, if you feel slightly sinking, you can perceive the real gold jewelry, which shows that the gold body is small and heavy. You should be vigilant for the stupid and light jewelry, and carefully discern whether for fakes or semi -fakes.
The trial soft and hard. The higher the color of the gold jewelry, the softer, and the more elasticity. The real gold will have light marks with teeth or needle. Low -colored steel is hard; those with heavy mixes are elastic, crispy and easy to break. The pure gold is soft, and it is generally not used to make embedded jewelry. Therefore, all inlaid gold jewelry claims to be 24K and there must be fraud.
This scraping porcelain plate method. Find an unsightly porcelain plate. If not, you can buy a porcelain at home in the home improvement store. Scrape the porcelain plate with a golden device. If the black scratch is left on the porcelain plate, your gold ware is not a real gold. If the scratch is golden, it is true gold.
This can make the fake golden shape reveal, but your gold ware may be scratched.
The nitric acid test method. Put the goldware into a small stainless steel container, drop a drop of nitric acid on the goldware, and observe the reaction. If the acid is green, then this golden device is either made of ordinary metals or gold plated. If it is golden, it is gold -plated copper. If it presents milk, it is gold -plated silver. If there is no reaction, then this golden device is true.
This nitric acid test is a good way to distinguish the authenticity of gold, but because nitric acid is not easy to obtain, and it is also dangerous to operate at home, it is recommended that you give it to the jewelry dealer to do it.
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