5 thoughts on “How can we tell whether the purity of gold is high?”
Fernando
According to the color and luster of gold, we can generally distinguish pure gold, K gold, real gold and fake gold according to the different luster and color of gold. The best gold is red yellow, with a fineness of more than 95% in terms of density, it is advisable to calculate the density of the measured gold jewelry by using the formula "mass of certain gold jewelry (g) / volume of certain gold jewelry (cubic centimeter) = density". If the density is about 19.32 g / cubic centimeter, it is pure gold or relatively pure gold, otherwise it is non pure gold or gold with color difference the high-quality gold jewelry with high bending hardness will leave traces after nail engraving. More than 97% of the gold jewelry with high quality will appear wrinkles at the bend after bending for two or three times. About 95% of the gold jewelry with high quality will feel hard when bending, and about 90% of the gold jewelry with high quality will be hard when bending, while the gold jewelry with more impurities will break after bending for two or three times you can also listen to the rhyme and see the elasticity of gold. If you use a tool, the simplest way is to use the touchstone to identify the fineness, that is, use the gold matching plate and the tested jewelry to grind on the touchstone, and determine the fineness of gold jewelry by comparing the colors - easy to provide for gold panning
First of all, the appearance must be bright and clean without any trace. Then, the color should be seven green, eight yellow, nine purple and ten red. The hardness should be checked: bite with your teeth and burn with fire. The color should be checked. However, this kind of color is recognized by the naked eye and cannot be completely the same. You can go to Jintong for professional testing
It is relatively difficult to directly observe the purity of gold with the naked eye. It is better to do an identification so that the components can be identified.
According to the color and luster of gold, we can generally distinguish pure gold, K gold, real gold and fake gold according to the different luster and color of gold. The best gold is red yellow, with a fineness of more than 95%
in terms of density, it is advisable to calculate the density of the measured gold jewelry by using the formula "mass of certain gold jewelry (g) / volume of certain gold jewelry (cubic centimeter) = density". If the density is about 19.32 g / cubic centimeter, it is pure gold or relatively pure gold, otherwise it is non pure gold or gold with color difference
the high-quality gold jewelry with high bending hardness will leave traces after nail engraving. More than 97% of the gold jewelry with high quality will appear wrinkles at the bend after bending for two or three times. About 95% of the gold jewelry with high quality will feel hard when bending, and about 90% of the gold jewelry with high quality will be hard when bending, while the gold jewelry with more impurities will break after bending for two or three times
you can also listen to the rhyme and see the elasticity of gold. If you use a tool, the simplest way is to use the touchstone to identify the fineness, that is, use the gold matching plate and the tested jewelry to grind on the touchstone, and determine the fineness of gold jewelry by comparing the colors - easy to provide for gold panning
First of all, the appearance must be bright and clean without any trace. Then, the color should be seven green, eight yellow, nine purple and ten red. The hardness should be checked: bite with your teeth and burn with fire. The color should be checked. However, this kind of color is recognized by the naked eye and cannot be completely the same. You can go to Jintong for professional testing
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It is relatively difficult to directly observe the purity of gold with the naked eye. It is better to do an identification so that the components can be identified.
The purity of gold is marked on every jewelry. 9 the more gold the higher the purity, the softer the purity.