jewelry supply wholesale Zhou Shengsheng's gold bracelet has a steel seal, a policy, no invoice, is it true? The others cannot recognize the true and false,

wholesale jewelry greensboro nc Identification of gold requires some experience.
1. Look at the color: the higher the purity of the gold jewelry, the deeper the color.
2. Weighing weight: The proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. The volume of gold is more than 40 % heavier than the silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. The gold jewelry should have a feeling of sinking in the hand, and the fake gold jewelry is light.
3. Look at the hardness: pure gold is soft and low. It can draw light marks with nails. Teeth bite can leave the dental marks. The high -quality gold jewelry is lower than the soft color. The bending method can also test the hardness. The pure gold is soft, it is easy to bend, the lower the purity, and the less likely to bend.
4. Listen to the sound: Throw the real gold with a color of more than 99 %, which will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds.
5. Burning with fire: The jewelry will be burned red (do not melt the jewelry) with fire (do not melt the jewelry). After cooling, observe the color change. Black is not pure gold. Generally, the lower the color, the stronger the color, and the darkens are all, indicating that it is a fake gold jewelry.
6. Seeing the mark: Domestic gold jewelry is allicized and prepared according to international standards, and the killing records, such as "24K" indicate "foot red" or "foot gold"; 18K gold, the word "18K" is marked. The identification of gold jewelry must be comprehensively judged according to the sample to determine the true and false and the quality of the real.