Look at the 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".
This weight The gold is about double the same volume of silver, lead, and tin. True gold has a feeling of falling on the hand, while copper or others only have a sense of heavyness without falling.
In listening to the sound When the high -quality gold jewelry is hit or throwing it hard, the dull sound of "hits, hits" is made, there is no rhyme or elasticity, K Jin has the rhyme, sound, and elasticity. The greater the elasticity, the more the rhyme, the more old, the worse the color. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds.
Ter folding hardness The gold with high color shall be left with large head needles or nails. More than 97%of the gold jewelry, after two or three times, wrinkles appeared at the bend, also called fish scales; about 95%of gold jewelry, it feels hard when bending, and the fish scales are not obvious; The jewelry is very hard when the bending is bent, and there is no fish scale pattern; the gold jewelry containing more impurities, the bend is twice or three times to break; When using this method, the width and thickness of the jewelry should be considered. The thick and width should be hardened, and the thin and narrow ones are softer.
The test goldstone is identified into color The use of the determined gold and the test first jewelry to grind the tunnel on the test gold stone. By comparing the color, the gold jewelry is determined. This method should be carried out under natural light and sunlight, and cannot be carried out under the direct sunlight and incandescent lamps. This in the past often used testing gold stones to determine the general content of gold. Testing gold stones are a mixed black mineral such as quartz and protein -containing quartz, and the gold is drawn on the test stone to see the general shape of the gold. Pure gold: shiny dark yellow, thick yellow; silver -containing gold: light color transformed micro -band -inflammatory green; gold containing gold greater than 25%: earth white; copper gold: deeper color, red color tone; silver copper containing copper; Gold: yellow; gold containing zinc, same, nickel: white gold. In the acid point Man the golden lattice and the comparison gold on the test stone, and test the nitric acid on the golden road with a glass stick. Because the chemical properties of the gold element are stable and do not respond to the acid, the color is not the color. Change. If it is not gold or non -pure gold, the Golden Road disappears or changes. The law of changes is "three fast, three slows", that is, the low -quality disappearance is fast, and the high color disappears slowly; Depending on the disappearance of its golden road, the comparison of the comparison can determine the color of gold jewelry. Inflowing Inflowing the jewelry to burn red (do not melt the jewelry), observe the color change after cooling, if the surface is still the original golden color is pure gold; if the color becomes darker or different The degree of darker 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. After burning red, it is quenched into the water, and the color remains unchanged. It really does not change color when it comes to fire.
00:00 / 00: 5570% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease by 10% →: single fast forward 5 seconds studio Here you can drag no longer appear in the player settings to reopen the small window shortcut key description
Pay content for time limit to check for freenAnswer Hello, 1. Look at the color, the higher the purity of the gold jewelry, the deeper the color. 2. The weight, the gold jewelry should be sinking in the hand, and the fake gold jewelry feels lightly. 3. Listening to the sound, the real gold with a color of more than 99%is thrown on the hard ground, it will make a click, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound is made, and there is a loud sound. 4. Looking at the mark, the 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 standard "18K".
Look at the 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".
This weight
The gold is about double the same volume of silver, lead, and tin. True gold has a feeling of falling on the hand, while copper or others only have a sense of heavyness without falling.
In listening to the sound
When the high -quality gold jewelry is hit or throwing it hard, the dull sound of "hits, hits" is made, there is no rhyme or elasticity, K Jin has the rhyme, sound, and elasticity. The greater the elasticity, the more the rhyme, the more old, the worse the color. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds.
Ter folding hardness
The gold with high color shall be left with large head needles or nails. More than 97%of the gold jewelry, after two or three times, wrinkles appeared at the bend, also called fish scales; about 95%of gold jewelry, it feels hard when bending, and the fish scales are not obvious; The jewelry is very hard when the bending is bent, and there is no fish scale pattern; the gold jewelry containing more impurities, the bend is twice or three times to break; When using this method, the width and thickness of the jewelry should be considered. The thick and width should be hardened, and the thin and narrow ones are softer.
The test goldstone is identified into color
The use of the determined gold and the test first jewelry to grind the tunnel on the test gold stone. By comparing the color, the gold jewelry is determined. This method should be carried out under natural light and sunlight, and cannot be carried out under the direct sunlight and incandescent lamps.
This in the past often used testing gold stones to determine the general content of gold. Testing gold stones are a mixed black mineral such as quartz and protein -containing quartz, and the gold is drawn on the test stone to see the general shape of the gold. Pure gold: shiny dark yellow, thick yellow; silver -containing gold: light color transformed micro -band -inflammatory green; gold containing gold greater than 25%: earth white; copper gold: deeper color, red color tone; silver copper containing copper; Gold: yellow; gold containing zinc, same, nickel: white gold.
In the acid point
Man the golden lattice and the comparison gold on the test stone, and test the nitric acid on the golden road with a glass stick. Because the chemical properties of the gold element are stable and do not respond to the acid, the color is not the color. Change. If it is not gold or non -pure gold, the Golden Road disappears or changes. The law of changes is "three fast, three slows", that is, the low -quality disappearance is fast, and the high color disappears slowly; Depending on the disappearance of its golden road, the comparison of the comparison can determine the color of gold jewelry.
Inflowing
Inflowing the jewelry to burn red (do not melt the jewelry), observe the color change after cooling, if the surface is still the original golden color is pure gold; if the color becomes darker or different The degree of darker 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. After burning red, it is quenched into the water, and the color remains unchanged. It really does not change color when it comes to fire.
00:00 / 00: 5570% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease by 10% →: single fast forward 5 seconds studio Here you can drag no longer appear in the player settings to reopen the small window shortcut key description
Pay content for time limit to check for freenAnswer Hello, 1. Look at the color, the higher the purity of the gold jewelry, the deeper the color. 2. The weight, the gold jewelry should be sinking in the hand, and the fake gold jewelry feels lightly. 3. Listening to the sound, the real gold with a color of more than 99%is thrown on the hard ground, it will make a click, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound is made, and there is a loud sound. 4. Looking at the mark, the 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 standard "18K".