1 thought on “Jewelry Jewelry Appraisal Method of various jewelery appraisal”
Jeannie
Some people say that using the Dao's color filter to take a piece of green jadeite. If it transforms into red, it can indicate that this jadeite is dyed, and the color does not change color. This statement is very mechanical and the understanding of people. Is we know that the Dow's color filter is a color filter film, which only allows red light and orange light to pass through. The dyes used for dyeing emerald generally contain chromium salt. When it is very high, it will emit red light, and it appears red under the Dao's color filter mirror. However, if the color of the dye is not dark, the concentration of chromium salt is not high, and it is reddish under the Dao's color filter mirror, which is not easy to observe. In addition, natural green emeralds sometimes contain a small amount of red light, so it is used to observe the green emerald with the Dao's filter to analyze it carefully. So what is the difference between the natural green of emerald and dyed? We already know the reason for dyeing emeralds, and the reason why natural jadeite is green, white, and purple because the grains that make up the jadeite are green, white, and purple. So when we look at the color of a natural jadeite, its color and crystal cannot be divided into boundaries, and the original crystals, its original crystal is not color, and the dyeing agent that enters the emerald is along the crystal. The gap between the granularity or some fine cracks is infiltrated, so the color and crystal will have obvious divisions. Diamonds are the hardest substances in natural substances. Diamonds can be engraved with any other gems, but any other gems can be engraved with diamonds. It can also be carved with "standard hardness meter". The hardness is less than 9 degrees, and it is a fake diamond. Diamonds are also intimate. If a pen is drawn on the surface of the diamond, it becomes a continuous straight line, while other gems are intermittently intermittent. The above methods have a certain reference value in identifying diamonds. You can also observe through 10 times large mirror. Under 10 times the large mirror, most diamonds can see the flaws. There are triangular growth patterns. The surface of the diamond has "fire" light such as "red, orange, and blue". shining. The most accurate and reliable method is to use the "heat -guided meter" to measure heat -conducting data to distinguish between true and false diamonds, but the price of "thermal guide" is more expensive. Since the diamond is a noble and luxurious jewelry, the market is currently instead of or claiming that diamonds are used in cheap gems, artificial gemstones and even glass. There are many commonly used fake diamonds: ① 锆: It is very similar to diamonds and is the best substitute for diamonds. The appraisal method is that because the vermiculite has polarization and a large double refractive index, when the vermiculite edge after 10 times the large mirror is used to observe the processing of the processing, it can be seen from its top surface. Shadow, and diamonds have no phenomenon. ② Glass: The discount rate of glass is very low, and there is no flashing color light of diamonds; especially sinking into the water, the glass products are glory at all, and immediately expose the horse's feet. ③ Soviet diamond: That is, cubic oxidation, the earliest was successfully developed by the Soviets, hence the name. Soviet diamonds are artificial compounds, but they are very close to natural diamonds in terms of scattered and folding. They also have the seductive appearance of "fire". But its hardness (8.5) can be distinguished from each other. And thermal conductivity is much lower than that of diamonds, which can be identified by the "hot guide" and accurately distinguish it. ④ Crystal: Although the crystal is a natural mineral transparent crystal, it is like diamonds after processing, but it lacks the colorful light of diamonds. Natural gems are "ten red and nine cracks", and natural rubies without any flaws and cracks are extremely rare. The color of artificial ruby is consistent, with less internal defects or crystalline wraps, clean, and large blocks. As a precious gem, natural rubies with more than 3 carats on the market are very rare. If you encounter a larger ruby, you must attract attention, because natural ruby is thousands of times higher than artificial ruby. "Take medicine". The natural ruby has a strong "two -color". The so -called two -color, that is, there are two colors of red and orange -red in different directions. Stone or red glass. The red spinel is very similar to natural ruby. The two are the most confused, so they must be particularly cautious. The color of natural sapphire is often uneven, and most of them have straight growth patterns. The color of the artificial sapphire is the same, and its growth pattern is an arc -shaped belt. Often, there are bread dandruff or beaded bubbles in the body. The natural sapphire also has obvious duality. From one direction, it is blue, and from the other direction, it is blue -green. The color of other gems is different from natural sapphire, which can be distinguished. It the easiest method can be measured by hardness. Natural sapphire can be engraved on the yellow jade, and other blue gems can be difficult to engrave traces on the yellow jade. As long as there is a piece of yellow jade, sometimes some problems can be solved. In nature, there are many types of green and transparent gems similar to emeralds. The more common ones are emerald, tourmaline, fluorite, olives, garnet, and vermiculite. , Fluorite and emerald. Observed with the naked eye, green emeralds are generally translucent, often with fiber spots, while high -quality emerald transparent and crystal. The hardness of emeralds is 7.5-8, while the fluorite hardness is low, only 4. The proportion of emeralds is small, while fluorite, tourmaline, and jadeite are large. The vermiculite is strong and has obvious double shadows. In addition, there are artificial emeralds, green glass, etc. similar to natural emeralds, etc. The biggest difference between them is that most of the natural emeralds have flaws or bodies and can be seen. Of course, it is necessary to strictly and correctly distinguish it.
Some people say that using the Dao's color filter to take a piece of green jadeite. If it transforms into red, it can indicate that this jadeite is dyed, and the color does not change color. This statement is very mechanical and the understanding of people.
Is we know that the Dow's color filter is a color filter film, which only allows red light and orange light to pass through. The dyes used for dyeing emerald generally contain chromium salt. When it is very high, it will emit red light, and it appears red under the Dao's color filter mirror. However, if the color of the dye is not dark, the concentration of chromium salt is not high, and it is reddish under the Dao's color filter mirror, which is not easy to observe. In addition, natural green emeralds sometimes contain a small amount of red light, so it is used to observe the green emerald with the Dao's filter to analyze it carefully.
So what is the difference between the natural green of emerald and dyed? We already know the reason for dyeing emeralds, and the reason why natural jadeite is green, white, and purple because the grains that make up the jadeite are green, white, and purple. So when we look at the color of a natural jadeite, its color and crystal cannot be divided into boundaries, and the original crystals, its original crystal is not color, and the dyeing agent that enters the emerald is along the crystal. The gap between the granularity or some fine cracks is infiltrated, so the color and crystal will have obvious divisions. Diamonds are the hardest substances in natural substances. Diamonds can be engraved with any other gems, but any other gems can be engraved with diamonds. It can also be carved with "standard hardness meter". The hardness is less than 9 degrees, and it is a fake diamond. Diamonds are also intimate. If a pen is drawn on the surface of the diamond, it becomes a continuous straight line, while other gems are intermittently intermittent. The above methods have a certain reference value in identifying diamonds. You can also observe through 10 times large mirror. Under 10 times the large mirror, most diamonds can see the flaws. There are triangular growth patterns. The surface of the diamond has "fire" light such as "red, orange, and blue". shining. The most accurate and reliable method is to use the "heat -guided meter" to measure heat -conducting data to distinguish between true and false diamonds, but the price of "thermal guide" is more expensive.
Since the diamond is a noble and luxurious jewelry, the market is currently instead of or claiming that diamonds are used in cheap gems, artificial gemstones and even glass. There are many commonly used fake diamonds:
① 锆: It is very similar to diamonds and is the best substitute for diamonds. The appraisal method is that because the vermiculite has polarization and a large double refractive index, when the vermiculite edge after 10 times the large mirror is used to observe the processing of the processing, it can be seen from its top surface. Shadow, and diamonds have no phenomenon.
② Glass: The discount rate of glass is very low, and there is no flashing color light of diamonds; especially sinking into the water, the glass products are glory at all, and immediately expose the horse's feet.
③ Soviet diamond: That is, cubic oxidation, the earliest was successfully developed by the Soviets, hence the name. Soviet diamonds are artificial compounds, but they are very close to natural diamonds in terms of scattered and folding. They also have the seductive appearance of "fire". But its hardness (8.5) can be distinguished from each other. And thermal conductivity is much lower than that of diamonds, which can be identified by the "hot guide" and accurately distinguish it.
④ Crystal: Although the crystal is a natural mineral transparent crystal, it is like diamonds after processing, but it lacks the colorful light of diamonds. Natural gems are "ten red and nine cracks", and natural rubies without any flaws and cracks are extremely rare. The color of artificial ruby is consistent, with less internal defects or crystalline wraps, clean, and large blocks. As a precious gem, natural rubies with more than 3 carats on the market are very rare. If you encounter a larger ruby, you must attract attention, because natural ruby is thousands of times higher than artificial ruby. "Take medicine".
The natural ruby has a strong "two -color". The so -called two -color, that is, there are two colors of red and orange -red in different directions. Stone or red glass.
The red spinel is very similar to natural ruby. The two are the most confused, so they must be particularly cautious. The color of natural sapphire is often uneven, and most of them have straight growth patterns. The color of the artificial sapphire is the same, and its growth pattern is an arc -shaped belt. Often, there are bread dandruff or beaded bubbles in the body.
The natural sapphire also has obvious duality. From one direction, it is blue, and from the other direction, it is blue -green. The color of other gems is different from natural sapphire, which can be distinguished.
It the easiest method can be measured by hardness. Natural sapphire can be engraved on the yellow jade, and other blue gems can be difficult to engrave traces on the yellow jade. As long as there is a piece of yellow jade, sometimes some problems can be solved.
In nature, there are many types of green and transparent gems similar to emeralds. The more common ones are emerald, tourmaline, fluorite, olives, garnet, and vermiculite. , Fluorite and emerald. Observed with the naked eye, green emeralds are generally translucent, often with fiber spots, while high -quality emerald transparent and crystal. The hardness of emeralds is 7.5-8, while the fluorite hardness is low, only 4. The proportion of emeralds is small, while fluorite, tourmaline, and jadeite are large. The vermiculite is strong and has obvious double shadows.
In addition, there are artificial emeralds, green glass, etc. similar to natural emeralds, etc. The biggest difference between them is that most of the natural emeralds have flaws or bodies and can be seen. Of course, it is necessary to strictly and correctly distinguish it.