1 thought on “What is the way to test the purity of golden goldenness?”
Sandy
1. Look at the mark: Now the gold jewelry produced by manufacturers in my country is made by purification according to international standards, and the marks are used to indicate the amount of gold in metal products with K. According to the words of 24K or 18K on the mark, you can know how the jewelry is in color, but the mark of K gold cannot be used as below 10K as regulations. 2, see color: the higher the purity of gold jewelry, the deeper the color. As people often say "seven greens, eight yellows, nine purple and ten red", that is, if the gold decoration is blue yellow, the gold content can reach 70 %; the yellow content of yellow can reach 80-90 %; if it is red yellow, the gold content can reach more than 95. Of course, it is not enough to distinguish the color and true and false of gold jewelry by color. 3, weight: The proportion of gold is 19.3, which is higher than other metals. The same volume of gold is 1.8 times the weight of the silver and 2.2 times the copper. Therefore, the real gold bearing should feel heavy in hand, and fake gold feels lighter. 4, listening to the sound: throw the gold jewelry to the desktop, or throw it on the hard ground, the lower the gold content, the greater the elasticity, the higher the jump, the crisp sound, and there is a tone; the higher the gold content, the more elastic it is Small, the lower the jump, the sound of the sound is low, and there is no sound. 5, testing hardness: The higher the gold content of the jewelry, the softer, the easily bending with your hands, good toughness, not easy to break, leaving clear scratches with hard things; the lower the amount of gold, the harder it will be, you need to use it, you need to use it. You need to use it. You need to use it. You need to use it. You need to use it. You need to use it. Great strength can bend, and it is easy to break. When scratching with hard things, scratches are not obvious. 6, scientific test: First, use the method of burning to identify. Put the jewelry in the smoke -free fire, and the color is unchanged after the pure gold is burned; The second is chemistry. With a concentration of 45 % or 70 % sulfuric acid, the gold has no change and keeps the original; the silver becomes black; Because metals such as silver and copper are dissolved in acid, a chemical reaction will be developed
1. Look at the mark: Now the gold jewelry produced by manufacturers in my country is made by purification according to international standards, and the marks are used to indicate the amount of gold in metal products with K. According to the words of 24K or 18K on the mark, you can know how the jewelry is in color, but the mark of K gold cannot be used as below 10K as regulations.
2, see color: the higher the purity of gold jewelry, the deeper the color. As people often say "seven greens, eight yellows, nine purple and ten red", that is, if the gold decoration is blue yellow, the gold content can reach 70 %; the yellow content of yellow can reach 80-90 %; if it is red yellow, the gold content can reach more than 95. Of course, it is not enough to distinguish the color and true and false of gold jewelry by color.
3, weight: The proportion of gold is 19.3, which is higher than other metals. The same volume of gold is 1.8 times the weight of the silver and 2.2 times the copper. Therefore, the real gold bearing should feel heavy in hand, and fake gold feels lighter.
4, listening to the sound: throw the gold jewelry to the desktop, or throw it on the hard ground, the lower the gold content, the greater the elasticity, the higher the jump, the crisp sound, and there is a tone; the higher the gold content, the more elastic it is Small, the lower the jump, the sound of the sound is low, and there is no sound.
5, testing hardness: The higher the gold content of the jewelry, the softer, the easily bending with your hands, good toughness, not easy to break, leaving clear scratches with hard things; the lower the amount of gold, the harder it will be, you need to use it, you need to use it. You need to use it. You need to use it. You need to use it. You need to use it. You need to use it. Great strength can bend, and it is easy to break. When scratching with hard things, scratches are not obvious.
6, scientific test: First, use the method of burning to identify. Put the jewelry in the smoke -free fire, and the color is unchanged after the pure gold is burned; The second is chemistry. With a concentration of 45 % or 70 % sulfuric acid, the gold has no change and keeps the original; the silver becomes black; Because metals such as silver and copper are dissolved in acid, a chemical reaction will be developed