1 thought on “stella wholesale jewelry What are the inspection methods for Golden Jewelry?”
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aspen leaf jewelry wholesale The simplest appraisal method is to use the principle of buoyancy law, that is, the law of Archimedes. The steps are as follows:
. The specific operation method
1. First, the gold and silver jewelry is weighted on high -precision electronic scale (accuracy 0.01g), and record its weight ;
2. Use plastic bottles with pure water to cut 1/2 to leave half of them, and then pour in an appropriate amount of pure water, put it on the electronic scale weight to record its weight; The plastic bottle continues to be placed on the electronic scale.
3. The gold and silver jewelry that need to be identified is tied with thin lines (the more thinner the better), and one end with a thin line will immerse the jewelry into the electronic scale with a pure water bottle with a pure water. Do not sink the jewelry to the bottom, do not expose the jewelry out of the water, and you cannot touch it on the inner wall of the plastic bottle. At this time, record the weight displayed.
. Calculation
Colon according to the above operation method to obtain three sets of data: the first group is the weight of the jewelry, and the second group is the weight of plastic bottle equipped with pure water The third group is the weight of the plastic bottle after sinking into the jewelry.
I assumptions 1: We need to identify silver jewelry, the weight of the jewelry is 105 grams, the plastic bottle equipped with pure water is 200 grams, and the plastic bottle weighs 210 grams after immersing the jewelry.
210 grams-200 grams = 10 grams (the weight of the plastic bottle after immersion in jewelry), according to the law of Archimede: "Obstone in the static liquid is affected The principle of lined up fluids ", the increase in the weight of the plastic bottle after immersion in jewelry is the size of the jewelry, which is 10 cubic centimeters, that is, the weight of 10 grams of pure water (the density of pure water is 1 gram/1 cubic centimeter).
Is we know that the density of the sterling silver 9999 is 10.5 grams/cubic centimeter, the silver jewelry weighs 105 grams, and the volume is 10 cubic centimeters, that is, 10 cubic centimeters X10.5 grams/cubic centimeter = 105 grams, this You can be sure that it is sterling silver.
I assumptions 2: We need to identify gold jewelry, the weight of the jewelry is 19.3 grams, the weight of the plastic bottle equipped with pure water is 200 grams, and the weight of the plastic bottle after immersion in the jewelry is 201 grams.
201 grams-200 grams = 1 gram (the weight of the plastic bottle after immersion in the jewelry), the weight of the plastic bottle after immersion is immersed in the jewelry bottle, which is the volume of the jewelry, that is, 1 cubic centimeter, which is 1 gram of 1 gram The weight of pure water.
Is we know that the density of pure gold 9999 is 19.3 grams/cubic centimeter, gold jewelry weighs 19.3 grams, and the volume is 1 cubic centimeter, that is, 1 cubic centimeter x19.3 grams/cubic centimeter = 19.3 grams, this You can be sure that it is pure gold.
If according to the above operations and calculations, if the density of the calculation of the jewelry does not meet the density of the metal, it is either insufficient or fundamental.
aspen leaf jewelry wholesale The simplest appraisal method is to use the principle of buoyancy law, that is, the law of Archimedes. The steps are as follows:
. The specific operation method
1. First, the gold and silver jewelry is weighted on high -precision electronic scale (accuracy 0.01g), and record its weight ;
2. Use plastic bottles with pure water to cut 1/2 to leave half of them, and then pour in an appropriate amount of pure water, put it on the electronic scale weight to record its weight; The plastic bottle continues to be placed on the electronic scale.
3. The gold and silver jewelry that need to be identified is tied with thin lines (the more thinner the better), and one end with a thin line will immerse the jewelry into the electronic scale with a pure water bottle with a pure water. Do not sink the jewelry to the bottom, do not expose the jewelry out of the water, and you cannot touch it on the inner wall of the plastic bottle. At this time, record the weight displayed.
. Calculation
Colon according to the above operation method to obtain three sets of data: the first group is the weight of the jewelry, and the second group is the weight of plastic bottle equipped with pure water The third group is the weight of the plastic bottle after sinking into the jewelry.
I assumptions 1: We need to identify silver jewelry, the weight of the jewelry is 105 grams, the plastic bottle equipped with pure water is 200 grams, and the plastic bottle weighs 210 grams after immersing the jewelry.
210 grams-200 grams = 10 grams (the weight of the plastic bottle after immersion in jewelry), according to the law of Archimede: "Obstone in the static liquid is affected The principle of lined up fluids ", the increase in the weight of the plastic bottle after immersion in jewelry is the size of the jewelry, which is 10 cubic centimeters, that is, the weight of 10 grams of pure water (the density of pure water is 1 gram/1 cubic centimeter).
Is we know that the density of the sterling silver 9999 is 10.5 grams/cubic centimeter, the silver jewelry weighs 105 grams, and the volume is 10 cubic centimeters, that is, 10 cubic centimeters X10.5 grams/cubic centimeter = 105 grams, this You can be sure that it is sterling silver.
I assumptions 2: We need to identify gold jewelry, the weight of the jewelry is 19.3 grams, the weight of the plastic bottle equipped with pure water is 200 grams, and the weight of the plastic bottle after immersion in the jewelry is 201 grams.
201 grams-200 grams = 1 gram (the weight of the plastic bottle after immersion in the jewelry), the weight of the plastic bottle after immersion is immersed in the jewelry bottle, which is the volume of the jewelry, that is, 1 cubic centimeter, which is 1 gram of 1 gram The weight of pure water.
Is we know that the density of pure gold 9999 is 19.3 grams/cubic centimeter, gold jewelry weighs 19.3 grams, and the volume is 1 cubic centimeter, that is, 1 cubic centimeter x19.3 grams/cubic centimeter = 19.3 grams, this You can be sure that it is pure gold.
If according to the above operations and calculations, if the density of the calculation of the jewelry does not meet the density of the metal, it is either insufficient or fundamental.