First, the golden gold is the seven green eight yellow nine purple ten red. It means that the golden yellow gold content is 70 %, the yellow gold contains 80 %, the purple yellow gold contains 90 %, and the red yellow contains almost 100 %. 02 . The proportion of gold is the largest proportion of the proportion of the material, and its proportion is 19.37, and the same weight is brass; the size of the red copper is much larger than the gold of the same weight. Those who have experience, look at the color, weigh the weight, and know one or two. 03 . The hardness of the hardness is the smallest than the hardness of the hardness. You can bite the marks with your teeth. 04 . The fire burns is not afraid of the fire. It has been burned in the flame, and the golden light is still glittering. In addition, other metals in a single acid (such as, hydrochloric acid, sulfuric acid) are not as good as gold.
Many people don't know how to distinguish the authenticity of gold. Let's take a look at how to distinguish it! The operation method 01 The see color The different luster and color of gold can be generally distinguished from pure gold, K gold, real gold, fake gold. That is, gold is better yellow (yellow -red), and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray and the color is about 50%. Therefore, there is a formula for "seven green eight yellow, yellow nine five red, yellow leucorrhea ash pairs of gold". For long -term gold jewelry, there will be a saying that "copper turns green, silver turns black, and gold will never change color".
02 The gold . As the saying goes, real gold is not afraid of fire, even if gold is burned red, it is still the glittering golden color after cooling.
03 This labeling The domestic gold jewelry is to be killed in accordance with regulations, indicating that 24K represents a purity of more than 99.6%, indicating 18K, which means that the purity is 75%at 75% above.
04 In listening to the sound This to falling on the ground, it will make a click. The fake or bad gold falls on the ground, and it will make a dwelling sound, and it will be beating after landing.
05 Chemical identification The gold jewelry is placed in the alcohol solution, and the filter paper is soaked in the solution. At this time, the filter paper will become gray -purple. Drops of bromine -A are on the filter paper. If it is really golden filter paper, it will turn white!
06
The proportion of gold is 19.3g/cm3. The relationship between color and proportion is relatively large. When the proportion is close to 19.3, the higher the pure gold. When the proportion is 18.5, 95%gold contains gold, and 90%of gold is contained at 17.8, and so on. As long as the proportion is measured, you can know the color of the jewelry, but in general, you can feel it in your hands. If you have a slightly heavy feeling, you can perceive it, because other metals with the same weight, such as silver, copper, tin, lead and other weights, etc. are different.
First, the golden gold is the seven green eight yellow nine purple ten red. It means that the golden yellow gold content is 70 %, the yellow gold contains 80 %, the purple yellow gold contains 90 %, and the red yellow contains almost 100 %.
02
. The proportion of gold is the largest proportion of the proportion of the material, and its proportion is 19.37, and the same weight is brass; the size of the red copper is much larger than the gold of the same weight. Those who have experience, look at the color, weigh the weight, and know one or two.
03
. The hardness of the hardness is the smallest than the hardness of the hardness. You can bite the marks with your teeth.
04
. The fire burns is not afraid of the fire. It has been burned in the flame, and the golden light is still glittering. In addition, other metals in a single acid (such as, hydrochloric acid, sulfuric acid) are not as good as gold.
Many people don't know how to distinguish the authenticity of gold. Let's take a look at how to distinguish it!
The operation method
01
The see color
The different luster and color of gold can be generally distinguished from pure gold, K gold, real gold, fake gold. That is, gold is better yellow (yellow -red), and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray and the color is about 50%. Therefore, there is a formula for "seven green eight yellow, yellow nine five red, yellow leucorrhea ash pairs of gold". For long -term gold jewelry, there will be a saying that "copper turns green, silver turns black, and gold will never change color".
02
The gold
. As the saying goes, real gold is not afraid of fire, even if gold is burned red, it is still the glittering golden color after cooling.
03
This labeling
The domestic gold jewelry is to be killed in accordance with regulations, indicating that 24K represents a purity of more than 99.6%, indicating 18K, which means that the purity is 75%at 75% above.
04
In listening to the sound
This to falling on the ground, it will make a click. The fake or bad gold falls on the ground, and it will make a dwelling sound, and it will be beating after landing.
05
Chemical identification
The gold jewelry is placed in the alcohol solution, and the filter paper is soaked in the solution. At this time, the filter paper will become gray -purple. Drops of bromine -A are on the filter paper. If it is really golden filter paper, it will turn white!
06
The proportion of gold is 19.3g/cm3. The relationship between color and proportion is relatively large. When the proportion is close to 19.3, the higher the pure gold. When the proportion is 18.5, 95%gold contains gold, and 90%of gold is contained at 17.8, and so on. As long as the proportion is measured, you can know the color of the jewelry, but in general, you can feel it in your hands. If you have a slightly heavy feeling, you can perceive it, because other metals with the same weight, such as silver, copper, tin, lead and other weights, etc. are different.