5 thoughts on “How to identify whether corals are stained?”
Geoffrey
For the identification of the authenticity of red coral, observation lines are very important. Because of its rapid growth, Haizhu has a large groove -like texture on its surface. Therefore, the red coral imitation of the sea bamboo is generally large, and the distance between the vertical lines is relatively wide, generally about 1mm, or even larger. The vertical lines of natural red corals are fine, and some of them cannot be seen clearly. The distance is generally only about 0.5mm. 2. Look at horizontal lines: This lines refer to the lines of red coral cross -section. For the true and false identification of red coral, the lines of the cross section are very important judgment basis. The cross -section of sea bamboo is radioactive texture, while the cross section of natural red corals is a concentric circular growth pattern. And the dyed sea bamboo due to uneven dyeing, the cross section will show the shape of the sun's heart, that is, the color is spread outward from the center of the column, and gradually deepen. 3. Look at the white core We all know that almost all natural red corals have white cores, but the dyed sea bamboo will also imitate the white core, so the white core cannot be used as a identification of the true and false red corals. Basis, but we can judge according to the color transition of the white core. The white core of natural red coral, most of the white and red parts of the white and red parts are clear, while the white and red parts of the white and red part of the dyed sea bamboo are not clear, and there is a color transition.
Coral is a kind of biology called "coral insects" or "coral water" living in the ocean. This shell is often branched. Most corals are white, and there are a few that can appear red, blue, black, golden and yellow brown, and only beautiful, bright and pure corals can be used in jewelry inlaid or carving into crafts. The color of coral mainly depends on its growth environment. For example, white corals are distributed in the South China Sea, the Philippines, Penghu waters, sulfur balls, and Kyushu West Bank. Process. Red corals are mainly distributed in the Pacific Ocean, often red to dark red to orange -red, sometimes flesh red, which are generally used to embed it into jewelry. Lan Coral has been discovered on the west coast of Africa, and it is basically extinct. Due to the bright colors and the large corals with large bodies are very scarce, some illegal merchants will make huge profits by fraud. Generally, there are two types of counterfeiting: the first type: using substances similar to corals to make imitation products. Mainly -dyed bone products usually use beef bones or animal bones such as animal bones or imitation after coating, which can be distinguished according to the characteristics of their respective corals and bones. The coral horizontal section has radiation -like, with a concentric circular structure; the longitudinal surface has continuous waveform texture; and the bone product has a discontinuous straight texture, and the coral has the characteristics of white heart and white spots. The color characteristics of the two are also different. The coral red is naturally produced, the whole body is color, the dyeing bone product is different, and the color will be lighter or lighter. The dyeing marble dyeing Dali rock has a granular structure, and the hardness is much higher than the coral. It looks strong on the surface and it feels bright. It will slip with your fingers. If possible, you can test it with dilute acid. After the dyeing marble reaction, the solution becomes red, and the solution is still white after the red coral reaction. The color and appearance of the Pearl Pearl Pearl Pearl are similar to the coral, but the luster of the beads has a certain direction, and the density is larger than the coral. The second type: change the color of white or poor corals -bleach usually removes the turbid colors of corals with hydrogen peroxide, especially the dead branches of corals, otherwise it will be turbid yellow. Generally, dark corals can get light corals by bleaching. Black corals can be bleached to golden yellow, while dark red corals can be bleached to pink. The easiest way to distinguish the dyeing coral is to wipe with a cotton swab dipped in acetone. In addition, the color of the dye coral is different. The dyes are concentrated in the small cracks and particles, and the color is shallow inside and uneven. The dye coral is easy to fade or lose its luster after wearing it.
Pay content for time limit to check for freenAnswer Hello, your question teacher has seen it, and is sorting out the answer, please wait a while ~nWhat is the density of the dyed sea bamboo?nMethods of Appendence Realizing Coral beads: 1. Because of the special structure and lines of coral, there are few other things that can be imitated. This cargo is often used to dye the deep sea precious coral. The biggest difference between it and natural red coral is the direction of the texture. For example, a cylindrical red coral. First of all, from the cross -section, the natural texture is concentric circular, and the sea willow is radioactive texture. Or a vortex -like line, the dyed is parallel lines. 2. Look at the spacing of the lines. The natural pattern spacing is small, generally only about 0.5mm, and the spacing spacing of the dyed is generally about 1mm, or even larger. Large and small lines are related to the growth rate. The fine lines are natural deep-sea red corals, because it generally grows in the deep sea 200-2000 meters, the water pressure is very large, and the natural ones are slow. The lines are thick because of long and fast. It belongs to the shallow sea coral (sea bamboo, sea willow) dyeing treatment. For example, a thick tree with a thick wrist, the long and fast tree species grow up in a few years, but the slow and slow tree species will take decades or more. Of course, the slow density will be much higher, which is more precious, and corals are the same. 3. Carefully observe the red of the dyed corals floating on the surface. It can be seen that the white from the inside can be seen, but it is completely different from the white heart. Fake corals will also imitate white hearts, but the white hearts of natural corals (Aka, Mo?), White and red most of the boundaries are clear, while the white heart of dyed corals is not clear in white and red, and there is a color transition. 4. In the position of white heart, most of the dyed corals will make white hearts in the middle of the section. The white heart position of natural corals (Aka, Mo) is uncertain. On the back, some are coming out of the position of the branches and so on. 5. Natural corals generally do not have black spots. Dyed corals can see a lot of black spots. The reason for the black spots is the cause of the dyed coral. The local density will be relatively low. When the dye is immersed more during dyeing, it will be dark. 6. Looking at the gloss, the color dyed will change, generally a waxy luster, but the luster of the unsalid is like porcelain.nQuestion about the density of HaizhunAre you therenAnswernQuestion about the density of dyed sea bamboonI don't know how to describe it with you. Generally, you can identify the types and characteristics of fake corals (also known as imitation corals) from the following points: (1) White coral staining: commonly known as sea bamboo, which is characterized by obvious longitudinal texture and rough texture. The global distribution chart of red coral (2) Filling coral staining: It is a loose shallow sea reef coral filled with glue. Its characteristics: smooth, rough and fragile, and easy to transform. (3) Synthetic coral staining: It is a variety of shellfish and coral corals to grind into powder. It is plastic into various coral shapes and has no natural texture. (4) Various types of jade imitation coral: It is dyed with white clouds and lipsticks. Its characteristics: If this dyeing is not handled properly, it will fade very quickly. (5) Plastic dyeing coral: red coral dyed with plastic products. Its characteristics: (1) The texture is very light (2) the color is easy to fade (3) No natural texture and glossn6 morenBleak
The easiest way to identify is to wipe with a cotton swab dipped in acetone. If the cotton swab is stained, it can be determined as a dyed coral. It the color of the dyed coral is generally monotonous and different on the surface. With a high -power large mirror, we can see the phenomenon of dyes in small cracks and empty holes.
Test with dilute hydrochloric acid: The solution of dyed red coral imitation products will turn red, and there are a lot of bubbles; while natural red corals will not fade. Secondly, for those early imitation products with relatively rough dyeing technology, with ten times the magnifying glass observation, it is obvious that the color particles are gathered between the gaps. Most of them are stained. There will be obvious cracks at the connection part of the part, so the color distribution and depth of the colors will appear uneven, and where the local color is uniform, it will appear very rigid, without the delicate and spirituality of natural red corals.
For the identification of the authenticity of red coral, observation lines are very important. Because of its rapid growth, Haizhu has a large groove -like texture on its surface. Therefore, the red coral imitation of the sea bamboo is generally large, and the distance between the vertical lines is relatively wide, generally about 1mm, or even larger. The vertical lines of natural red corals are fine, and some of them cannot be seen clearly. The distance is generally only about 0.5mm.
2. Look at horizontal lines:
This lines refer to the lines of red coral cross -section. For the true and false identification of red coral, the lines of the cross section are very important judgment basis.
The cross -section of sea bamboo is radioactive texture, while the cross section of natural red corals is a concentric circular growth pattern. And the dyed sea bamboo due to uneven dyeing, the cross section will show the shape of the sun's heart, that is, the color is spread outward from the center of the column, and gradually deepen.
3. Look at the white core
We all know that almost all natural red corals have white cores, but the dyed sea bamboo will also imitate the white core, so the white core cannot be used as a identification of the true and false red corals. Basis, but we can judge according to the color transition of the white core.
The white core of natural red coral, most of the white and red parts of the white and red parts are clear, while the white and red parts of the white and red part of the dyed sea bamboo are not clear, and there is a color transition.
Coral is a kind of biology called "coral insects" or "coral water" living in the ocean. This shell is often branched. Most corals are white, and there are a few that can appear red, blue, black, golden and yellow brown, and only beautiful, bright and pure corals can be used in jewelry inlaid or carving into crafts. The color of coral mainly depends on its growth environment. For example, white corals are distributed in the South China Sea, the Philippines, Penghu waters, sulfur balls, and Kyushu West Bank. Process. Red corals are mainly distributed in the Pacific Ocean, often red to dark red to orange -red, sometimes flesh red, which are generally used to embed it into jewelry. Lan Coral has been discovered on the west coast of Africa, and it is basically extinct. Due to the bright colors and the large corals with large bodies are very scarce, some illegal merchants will make huge profits by fraud. Generally, there are two types of counterfeiting: the first type: using substances similar to corals to make imitation products. Mainly -dyed bone products usually use beef bones or animal bones such as animal bones or imitation after coating, which can be distinguished according to the characteristics of their respective corals and bones. The coral horizontal section has radiation -like, with a concentric circular structure; the longitudinal surface has continuous waveform texture; and the bone product has a discontinuous straight texture, and the coral has the characteristics of white heart and white spots. The color characteristics of the two are also different. The coral red is naturally produced, the whole body is color, the dyeing bone product is different, and the color will be lighter or lighter. The dyeing marble dyeing Dali rock has a granular structure, and the hardness is much higher than the coral. It looks strong on the surface and it feels bright. It will slip with your fingers. If possible, you can test it with dilute acid. After the dyeing marble reaction, the solution becomes red, and the solution is still white after the red coral reaction. The color and appearance of the Pearl Pearl Pearl Pearl are similar to the coral, but the luster of the beads has a certain direction, and the density is larger than the coral. The second type: change the color of white or poor corals -bleach usually removes the turbid colors of corals with hydrogen peroxide, especially the dead branches of corals, otherwise it will be turbid yellow. Generally, dark corals can get light corals by bleaching. Black corals can be bleached to golden yellow, while dark red corals can be bleached to pink. The easiest way to distinguish the dyeing coral is to wipe with a cotton swab dipped in acetone. In addition, the color of the dye coral is different. The dyes are concentrated in the small cracks and particles, and the color is shallow inside and uneven. The dye coral is easy to fade or lose its luster after wearing it.
Pay content for time limit to check for freenAnswer Hello, your question teacher has seen it, and is sorting out the answer, please wait a while ~nWhat is the density of the dyed sea bamboo?nMethods of Appendence Realizing Coral beads: 1. Because of the special structure and lines of coral, there are few other things that can be imitated. This cargo is often used to dye the deep sea precious coral. The biggest difference between it and natural red coral is the direction of the texture. For example, a cylindrical red coral. First of all, from the cross -section, the natural texture is concentric circular, and the sea willow is radioactive texture. Or a vortex -like line, the dyed is parallel lines. 2. Look at the spacing of the lines. The natural pattern spacing is small, generally only about 0.5mm, and the spacing spacing of the dyed is generally about 1mm, or even larger. Large and small lines are related to the growth rate. The fine lines are natural deep-sea red corals, because it generally grows in the deep sea 200-2000 meters, the water pressure is very large, and the natural ones are slow. The lines are thick because of long and fast. It belongs to the shallow sea coral (sea bamboo, sea willow) dyeing treatment. For example, a thick tree with a thick wrist, the long and fast tree species grow up in a few years, but the slow and slow tree species will take decades or more. Of course, the slow density will be much higher, which is more precious, and corals are the same. 3. Carefully observe the red of the dyed corals floating on the surface. It can be seen that the white from the inside can be seen, but it is completely different from the white heart. Fake corals will also imitate white hearts, but the white hearts of natural corals (Aka, Mo?), White and red most of the boundaries are clear, while the white heart of dyed corals is not clear in white and red, and there is a color transition. 4. In the position of white heart, most of the dyed corals will make white hearts in the middle of the section. The white heart position of natural corals (Aka, Mo) is uncertain. On the back, some are coming out of the position of the branches and so on. 5. Natural corals generally do not have black spots. Dyed corals can see a lot of black spots. The reason for the black spots is the cause of the dyed coral. The local density will be relatively low. When the dye is immersed more during dyeing, it will be dark. 6. Looking at the gloss, the color dyed will change, generally a waxy luster, but the luster of the unsalid is like porcelain.nQuestion about the density of HaizhunAre you therenAnswernQuestion about the density of dyed sea bamboonI don't know how to describe it with you. Generally, you can identify the types and characteristics of fake corals (also known as imitation corals) from the following points: (1) White coral staining: commonly known as sea bamboo, which is characterized by obvious longitudinal texture and rough texture. The global distribution chart of red coral (2) Filling coral staining: It is a loose shallow sea reef coral filled with glue. Its characteristics: smooth, rough and fragile, and easy to transform. (3) Synthetic coral staining: It is a variety of shellfish and coral corals to grind into powder. It is plastic into various coral shapes and has no natural texture. (4) Various types of jade imitation coral: It is dyed with white clouds and lipsticks. Its characteristics: If this dyeing is not handled properly, it will fade very quickly. (5) Plastic dyeing coral: red coral dyed with plastic products. Its characteristics: (1) The texture is very light (2) the color is easy to fade (3) No natural texture and glossn6 morenBleak
The easiest way to identify is to wipe with a cotton swab dipped in acetone. If the cotton swab is stained, it can be determined as a dyed coral.
It the color of the dyed coral is generally monotonous and different on the surface. With a high -power large mirror, we can see the phenomenon of dyes in small cracks and empty holes.
Test with dilute hydrochloric acid: The solution of dyed red coral imitation products will turn red, and there are a lot of bubbles; while natural red corals will not fade. Secondly, for those early imitation products with relatively rough dyeing technology, with ten times the magnifying glass observation, it is obvious that the color particles are gathered between the gaps. Most of them are stained. There will be obvious cracks at the connection part of the part, so the color distribution and depth of the colors will appear uneven, and where the local color is uniform, it will appear very rigid, without the delicate and spirituality of natural red corals.