1 thought on “How to test the true and false gold and false”
Natalie
The method of testing the authenticity of gold is: 1. Look at the color. The higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on the golden gold. The so-called green gold is only a silver component in the gold); the dark red yellow color is more than 95%, and the light red yellow yellow 90-95%is 90-95% The pale yellow is 80-85%, the cyan is 65-70%, the color blue with white light is only 50-60%, and the slightly yellow and white are less than 50%. 2. Type weight D gold weight 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 another way, first measure the weight of a pure gold bars with a balance, and then put the gold bars into a measuring cup and flood the gold bars. mads to the detected gold bars into a measuring cup. Observe 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. Listening to the sound When the high -quality gold jewelry is knocked out or threw it hard, the dull sound of "dwelling, clicking" is made, there is no rhyme or elasticity. , Sound, elasticity, the greater the elasticity, the more the rhyme, the more the elderly, 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. 4. Folding hardness The gold with high color, with large head needles or nails, can leave traces. More than 97%of the gold jewelry, after twirling two or three times, wrinkles appeared at the bend, called fish scales. The gold jewelry of about 95%of the golden jewelry feels hard when bending, and the fish scales are not obvious. 90%of the gold jewelry, which is very hard when bent, without fish scales; gold jewelry containing more impurities, bend two or three times to break; Essence 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. 5. Testing gold stone It use the determined gold and the test first jewelry to grind the road 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.
The method of testing the authenticity of gold is:
1. Look at the color.
The higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on the golden gold. The so-called green gold is only a silver component in the gold); the dark red yellow color is more than 95%, and the light red yellow yellow 90-95%is 90-95% The pale yellow is 80-85%, the cyan is 65-70%, the color blue with white light is only 50-60%, and the slightly yellow and white are less than 50%.
2. Type weight
D gold weight 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 another way, first measure the weight of a pure gold bars with a balance, and then put the gold bars into a measuring cup and flood the gold bars.
mads to the detected gold bars into a measuring cup. Observe 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. Listening to the sound
When the high -quality gold jewelry is knocked out or threw it hard, the dull sound of "dwelling, clicking" is made, there is no rhyme or elasticity. , Sound, elasticity, the greater the elasticity, the more the rhyme, the more the elderly, 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.
4. Folding hardness
The gold with high color, with large head needles or nails, can leave traces. More than 97%of the gold jewelry, after twirling two or three times, wrinkles appeared at the bend, called fish scales. The gold jewelry of about 95%of the golden jewelry feels hard when bending, and the fish scales are not obvious.
90%of the gold jewelry, which is very hard when bent, without fish scales; gold jewelry containing more impurities, bend two or three times to break; Essence 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.
5. Testing gold stone
It use the determined gold and the test first jewelry to grind the road 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.