On May 14, 2013, the gold price of 283.52 yuan/gram The national standard GB11887-89 regulations, each opening of the English Carat and German Karat, often writing "K") gold content is 4.166%, so each opens each open The gold content of gold is (in the bracket is national standard): 8k = 8*4.166%= 33.328%(333 ‰) 9k = 9*4.166%= 37.494%(375 ‰) 10k = 10 10 *4.166%= 41.660%(417 ‰) 12k = 12*4.166%= 49.992%(500 ‰) 14k = 14*4.166%= 58.324%(583 ‰) 18K = 18*4.166666 %= 74.998%(750 ‰) 20K = 20*4.166%= 83.320%(833 ‰) 21k = 21*4.166%= 87.486%(875 ‰) 22K = 22*4.166%= 91.652%(916 ‰) 24k = 24*4.166%= 99.984%(999 ‰) 24k Kim is considered a pure gold, becoming "1000 ‰", but the actual gold content is 99.99%, and it is 23.988 to 23.9888 K. gold (English: GOLD) is a chemical element, chemical symbol AU (from Latin: AURUM), atomic order 79. Pure gold is a metal with bright luster, red, soft, density, high density, and ductility. It is one of the rare, precious and extremely valued metals. At the same time, it is also an important material for the jewelry, electronics industry, modern communication, aerospace and air industry and other departments. The expansion information If discrimination of gold adulteration 1, whether gold has white highlights In materials to cut gold bars or gold jewelry, observe the cut surface with magnifying glass. Because gold and 融 cannot be fused together, it means that the gold is mixed with 铱. 2, measured the proportion. In the weight of a pure gold bars with an balance, and then put the gold bars into a measuring cup and flood the gold bar. Then put the detected gold bars in a measuring cup, whether the scale of the water rises or decreases. As long as it changes, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air in gold jewelry. 3, real gold is not afraid of fire. This gold bars or gold jewelry burned for a while to observe its changes. Because the oxidation reaction occurs with oxygen in the air, the gold bars with insufficient purity will become gray; and the color of the pure gold will be red after the fire is baked. However, this method may be destroyed to jewelry. This method 1. The gloss of the gold jewelry can be applied to a layer of nail polish thinly on it. 2. If there are black silver films on the surface, 2 grams of salt, 7 grams of soda, 8 grams of bleaching powder, 60 ml of clear water, are made into a "golden device cleaning agent", put the gold jewelry in a bowl, and the golden jewelry is in a bowl. Pour in the cleaning agent. After 2 hours, remove the golden jewelry, rinse with water (preferably not hard water), buried in the wood chips to dry, and then wipe it with a soft cloth. 3, the ring inlaid with a cotton roll with a popsicle or match stick, wet the gemstone and its frame in the mixed fluid of the dew and glycerin, and then use the velvet cloth to brighten the ring. Do not scrape it with a kind of sharp objects. 4, salt and vinegar mixed synthetic cleaning agent, using it to wipe the pure gold jewelry, which can make a long time. 5, wipe or scrub with hot rice soup with hot rice, can also restore gloss. 6, scrubbing with ammonia water
The gold price of jewelry is 340 yuan, and the transaction price is 253 yuan. If it rises yesterday, the investment is 270, and the recovery of 263 The or the transaction price of jewelry gold or transaction price
On May 14, 2013, the gold price of 283.52 yuan/gram
The national standard GB11887-89 regulations, each opening of the English Carat and German Karat, often writing "K") gold content is 4.166%, so each opens each open The gold content of gold is (in the bracket is national standard):
8k = 8*4.166%= 33.328%(333 ‰)
9k = 9*4.166%= 37.494%(375 ‰)
10k = 10 10 *4.166%= 41.660%(417 ‰)
12k = 12*4.166%= 49.992%(500 ‰)
14k = 14*4.166%= 58.324%(583 ‰)
18K = 18*4.166666 %= 74.998%(750 ‰)
20K = 20*4.166%= 83.320%(833 ‰)
21k = 21*4.166%= 87.486%(875 ‰)
22K = 22*4.166%= 91.652%(916 ‰)
24k = 24*4.166%= 99.984%(999 ‰)
24k Kim is considered a pure gold, becoming "1000 ‰", but the actual gold content is 99.99%, and it is 23.988 to 23.9888 K.
gold (English: GOLD) is a chemical element, chemical symbol AU (from Latin: AURUM), atomic order 79. Pure gold is a metal with bright luster, red, soft, density, high density, and ductility. It is one of the rare, precious and extremely valued metals. At the same time, it is also an important material for the jewelry, electronics industry, modern communication, aerospace and air industry and other departments.
The expansion information
If discrimination of gold adulteration
1, whether gold has white highlights
In materials to cut gold bars or gold jewelry, observe the cut surface with magnifying glass. Because gold and 融 cannot be fused together, it means that the gold is mixed with 铱.
2, measured the proportion.
In the weight of a pure gold bars with an balance, and then put the gold bars into a measuring cup and flood the gold bar. Then put the detected gold bars in a measuring cup, whether the scale of the water rises or decreases. As long as it changes, it means that the gold bar is not pure gold. But if it is gold jewelry, this method is not applicable because there is air in gold jewelry.
3, real gold is not afraid of fire.
This gold bars or gold jewelry burned for a while to observe its changes. Because the oxidation reaction occurs with oxygen in the air, the gold bars with insufficient purity will become gray; and the color of the pure gold will be red after the fire is baked. However, this method may be destroyed to jewelry.
This method
1. The gloss of the gold jewelry can be applied to a layer of nail polish thinly on it.
2. If there are black silver films on the surface, 2 grams of salt, 7 grams of soda, 8 grams of bleaching powder, 60 ml of clear water, are made into a "golden device cleaning agent", put the gold jewelry in a bowl, and the golden jewelry is in a bowl. Pour in the cleaning agent. After 2 hours, remove the golden jewelry, rinse with water (preferably not hard water), buried in the wood chips to dry, and then wipe it with a soft cloth.
3, the ring inlaid with a cotton roll with a popsicle or match stick, wet the gemstone and its frame in the mixed fluid of the dew and glycerin, and then use the velvet cloth to brighten the ring. Do not scrape it with a kind of sharp objects.
4, salt and vinegar mixed synthetic cleaning agent, using it to wipe the pure gold jewelry, which can make a long time.
5, wipe or scrub with hot rice soup with hot rice, can also restore gloss.
6, scrubbing with ammonia water
The gold price of jewelry is 340 yuan, and the transaction price is 253 yuan. If it rises yesterday, the investment is 270, and the recovery of 263
The or the transaction price of jewelry gold or transaction price
Hello, your problem is a long time. The price is between 385-260 yuan per gram and has been going downhill! Please adopt satisfaction!
Now that gold is showing a decline, the prices of various regions are also different. The overall price is between 275 and 390 yuan/gram.
Now gold is generally about 300 in the store, and the price of the market is about 24.5. Essence Essence Essence Essence
The golden gold below is really exciting,