1 thought on “How to identify the pros and cons of gold jewelry”
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However, when buying gold jewelry, how to identify the authenticity of gold jewelry? The quality of gold is identified from the following six aspects: the density of gold is 19.32 grams/cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams/cubic centimeter, it is pure gold or more pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry). : According to the different gloss and color of gold, you can generally distinguish pure gold, K gold, real gold, and fake gold. That is, gold is better with red yellow, 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 greens, eight yellow, nine five red, and yellow leucorrhea ash. For jewelry from Jiu Tibet, there will be a saying that "copper turns green, silver turns black, and gold will never change color". View density: The density of gold is 19.32 grams/cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams/cubic centimeter, it is pure gold or more pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry). Folding hardness: Gold has the characteristics of ductility and small hardness, and can be pressed into a thin piece of 12.7 microns. When the color is high, marks can be left with large head needles or nails. More than 97%of gold jewelry, after twisting two or three times, wrinkles appear at the bending, also called fish scales; about 95%of gold jewelry, it feels hard when bending, and the fish scales are not obvious; about 90%of the golden gold golden gold; The jewelry is very hard when the bending is bent, without fish scales; gold jewelry containing more impurities, bend twice or three times to break; if it is made for raw gold, the bend is broken. 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. Listening to the rhyme, watching elasticity: When the high -quality gold jewelry is knocked out or threw it hard, it emits a dull sound of "daedy, dwelling", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, elasticity, and elasticity The greater the elasticity, the more the rhyme, the more the elders, the worse the color. Use acid points: grind the appraisal jewelry and the golden road of the cards on the test stone, and test the nitric acid on the golden road with a glass stick. Because the chemical properties of the golden element are stable and do not respond to the acid, the color remains unchanged. 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 color disappears quickly, and the high color disappears slowly; Depending on the disappearance of its golden road, compare cards can determine the color of gold jewelry. Use the test goldstone to identify the color: use the gold -pairing card (the gold medal that has been determined) and the subject's first jewelry on the test gold stone, and use the contrast color to determine the color of the gold jewelry. This method should be carried out under natural light and sunlight, and cannot be carried out under the direct sunlight and incandescent lamps.
However, when buying gold jewelry, how to identify the authenticity of gold jewelry? The quality of gold is identified from the following six aspects: the density of gold is 19.32 grams/cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams/cubic centimeter, it is pure gold or more pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry). : According to the different gloss and color of gold, you can generally distinguish pure gold, K gold, real gold, and fake gold. That is, gold is better with red yellow, 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 greens, eight yellow, nine five red, and yellow leucorrhea ash. For jewelry from Jiu Tibet, there will be a saying that "copper turns green, silver turns black, and gold will never change color". View density: The density of gold is 19.32 grams/cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams/cubic centimeter, it is pure gold or more pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry). Folding hardness: Gold has the characteristics of ductility and small hardness, and can be pressed into a thin piece of 12.7 microns. When the color is high, marks can be left with large head needles or nails. More than 97%of gold jewelry, after twisting two or three times, wrinkles appear at the bending, also called fish scales; about 95%of gold jewelry, it feels hard when bending, and the fish scales are not obvious; about 90%of the golden gold golden gold; The jewelry is very hard when the bending is bent, without fish scales; gold jewelry containing more impurities, bend twice or three times to break; if it is made for raw gold, the bend is broken. 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. Listening to the rhyme, watching elasticity: When the high -quality gold jewelry is knocked out or threw it hard, it emits a dull sound of "daedy, dwelling", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, elasticity, and elasticity The greater the elasticity, the more the rhyme, the more the elders, the worse the color. Use acid points: grind the appraisal jewelry and the golden road of the cards on the test stone, and test the nitric acid on the golden road with a glass stick. Because the chemical properties of the golden element are stable and do not respond to the acid, the color remains unchanged. 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 color disappears quickly, and the high color disappears slowly; Depending on the disappearance of its golden road, compare cards can determine the color of gold jewelry. Use the test goldstone to identify the color: use the gold -pairing card (the gold medal that has been determined) and the subject's first jewelry on the test gold stone, and use the contrast color to determine the color of the gold jewelry. This method should be carried out under natural light and sunlight, and cannot be carried out under the direct sunlight and incandescent lamps.