Diamond 4C refers to the standard of the quality evaluation of diamonds. Its diamond 4C includes: color color, weight cact, clarity Clarity and cutting Cut. Because the first letters of their four words are C, it is called 4C grading. This is an international general quality evaluation system. The diamond clarity classification each diamond has internal content, and the number, size, shape, and color of the inside will determine the clarity and characteristics of each diamond. Most of the diamond contains cannot be identified by the naked eye. The less inner containing, the more light refraction, making it double. We can use 10 times the large mirror to find a difference. The classification standards of the United States are: FL, IF, VVS1, VVS2, VS1, VS2, SI1, SI2, I1, I2, I3. (Note: FL is the best, decreases in order) Most of the gem-level diamonds, the color is colorless-light yellow series. When identifying the color of the diamond, compare the appraisal diamond with a set of international standard ratio than color stones. of. There are other colors of diamonds, such as: brown, orange, pink, blue and so on. D-G is a colorless level, and G-J is a near-color level. There is basically no collection and wearing significance from K to K-J. Diamond weight grading The weight of diamond is the easiest characteristic of 4C. Like other gems, the weight of the diamond is also measured with carats. Diamonds of the same quality, the larger the weight, the more precious. The current standard is that one carat is equal to 0.2g, and each carat is divided into 100 copies (or equivalent to 200 mg), so a 25 -point diamond weighs 0.25 carats. The diamond cutting level Ideal cutting: represents the standard that can only achieve first -class high -quality diamonds with only 3%. This cut makes the diamond reflect almost all the lights entering the diamond. An elegant and outstanding cut. Very easy to cut: It means about 15%of diamonds. It can reflect the light of diamonds and cut standards, but the price is slightly lower. Good cut: represent about 25%of diamond cut. It is the diamond reflected most of the light that enters the diamond. diamond 4C parameter standard identification 1. How to see the weight level of carats? carats are the units with heavy diamond meters. One carat is equal to one hundred points (0.50CT is 50point), and the weight is 0.2 grams. Essence Does 60 points look twice as large as 30 points, or twice the front of the two carat diamonds? This is wrong, because the diamond is cube, so the weight increases, and the proportion of its diameter increase is not the not. the same. 2. Carat weight points a. The world's drilling output. If it is distinguished by size, the larger the carat weight, and the number is reduced, so the price of two carats is twice the price of one carat. b. Broken diamond (below 0.08CT) may be much cheaper at per carat unit price, but because the inlaid process has increased the cost, all the finished products made of broken diamonds do not mean that the price of a single diamond of the same weight does not mean Low. c. Do the diamond look better and better? If the larger the front of the diamond, the shallower the depth, the ratio of the whole one will be completely different. The moderate proportion is the correct method of selecting carat weight. Weitation 1. How to see the level of clarity? The identification of all clarity is based on 10 times the bottom. Observe its characteristics with the eyes of ordinary people, the marks on the surface of the diamond, and the inclusion inside the diamond. Determine the number, position, size, signs, and obvious degree of the two. 2. Select the method of clarity level Step 1. Mainly the impression of the front of the entire diamond. Step 2. Re shrinks to the top, down, left, right, and middle blocks to pay attention. It step 3. I have carefully seen each aspect (including Crown, Pavilion Pavilion, waist circumference Girdle). Step 4. Finally integrate the above steps to re -feel the clarity level under the first impression. Step 5. Determine the true level of diamonds. 3. Points of clarity The diamonds are minerals produced under the surface. In this case, the diamonds after cutting are completed. The diamond clarity level for gemstones accounts for about 10%of all ore output, and the VS clarity level is very rare. It can be imagined that there are not two exactly the same diamonds in the world. Therefore, the tags exclusive to this diamond are the best testimony to identify this diamond. This is the correctness and objectivity of maintaining the clarity classification. color 1. How to see the color level? The grading of white diamond color is from DEFGHIJ to XYZ. The color of DEF is the first choice for many people when choosing diamonds. Indeed, there are very few colorless colors of colorless, so that everyone is eager to own. G ~ J color range is the choice of price and actual needs. Generally, the naked eye viewing has been inlaid with well -established finished products. If it is not a very professional appraiser, it is not easy to separate the color. 2. Choose the method of color level If the accurate resolution of the level, it is absolutely required than the color stone (). The conditions are: 1. Round diamonds, with no fluorescence (). 2. Moderate weight (0.30 ~ 0.40ct). 3. Cutting (above) and clarity (above SI1) are acceptable. 4. Number of 3 to 5 pieces, color. 3. Color points 1. You need to identify under the diamond light (). 2. The larger the color of the diamond, the more obvious the color of the yellow. 3. The background background color must be pure. 4. The inlaid diamonds watch the color from multiple angles. 5. Don't be too tired in mental state. 6. The evaluation of the two is reasonable. cutting 1. How to see the level? The perfect cut diamonds are to condense all the light from the external diamond, and then the desktop (table) and the crown department all reflect the light and fire color. The bottom cut is too deep, and the light cannot be refracted internally to produce light leakage; the bottom cut is too shallow, and the light immediately goes from the bottom. Neither of the diamond reflects the fascinating glory. If you cut too shallowly, you can see the Fish-Eye phenomenon from the front, and if you are too deep, you will see nailhead. 2. Choose the method of cutting level The best cutting presents the brightest fire color. Most of the diamond fire is generated by the crown section (). ) It is the most exquisite craft technology to express the firecai. 3. Cut the main points The measure (CUT) This measure is the only factors that the beauty of diamond can be enhanced by the only technical personnel. The effects of cutting diamond surfaces, proportions, symmetry (Symmetry) and polishing (Polish) plus changes in cutting surface angles, and the diamond diamond luster can have light (), fire light (), and flash (). The most ideal criterion for cutting is to reveal these three kinds of fire color.
Diamond 4C refers to diamond weight, diamond color, diamond clarity, and diamond cutting. Because their corresponding English words are cact, color, clarity, and cut, they are the first letters, so they are collectively referred to as diamond 4C. How many carats we often say are the units that describe diamond weight from the carat. 1 carat is equal to 0.2 grams, which is a relatively large diamond, the price is not low, and tens of thousands of yuan is normal. believe series Winter romantic DR proposal diamond ring Compared with the weight of diamonds, diamond color, diamond clarity and diamond cutting are relatively rarely heard, but it is also important. In terms of color, it is mainly for white diamonds. The closer the color is, the better the colorless color, the better the clarity, the better, the better. After all, it will inevitably affect the beauty if there is impurities inside the diamond. Cutting is also a relatively obvious item. If the cut is not good, the diamond will look dull, and the high -end diamond will be particularly brilliant and amazing.
"4C" is the measure of measurement of a diamond value and quality. The so -called "4C" is the abbreviation of four English words starting with C. It refers to the caraat weight, clarity, color, and cut (CUT). Just comprehensively appreciate the four points of "4C", you can easily understand the value and quality of a diamond. Diamond price = weight color clarity cutting.
4c Evaluation Standard: The 4C of diamonds is the main decisive factor of the value of diamond nude diamond. The 4C grading standard of the diamond is: weight cact, color color, cutting CUT, clarity Clarity. Therefore, the diamond 4C classification is a jewelry knowledge that must be known to buy or invest in diamond naked diamonds. The following is a detailed and comprehensive introduction to the 4C grading standard of diamonds. I hope it will be helpful to everyone.
. The weight of diamonds in English Carat: One of the diamond 4C classification standards
The weight of diamond is the easiest characteristic of 4C. Like other gems, diamonds, diamonds The weight is also measured by carats. Diamonds of the same quality, the larger the weight, the more precious. The word carat comes from a kind of "small horn tree" seeds. Because the weight of this seed has an amazing consistency, the weight of the diamond is used in the early stage, and one carat is equal to the weight of a small horn tree seed. The current standard is that one carat is equal to 0.2g, and each carat is divided into 100 copies (or equivalent to 200 mg), so a 25 -point diamond weighs 0.25 carats. IGI uses an electronic balance with a accuracy of 0.00001 carat, which is called accurate diamond weight. The diamond weight is recorded in the diamond appraisal report and accurately to the two digits after the decimal point. If you already have a budget in your heart, you will find a series of high -quality diamonds in your budget range for you to choose from. If the other party is very active or is not used to wearing jewelry, and may collide or damage her new ring, you better consider choosing a small model of diamonds or a precept for protecting large diamonds. At the same time, you must also remember: the smaller the size of the finger, the larger the diamond will look bigger. A 1 -caramel diamond is much larger than wearing on the finger No. 10 on the finger 5. If you are ready for the precepts, make sure your choice is suitable for this precepts, you can check what kind of gem you should need for the diamond model instructions or consulting jewelery consultation.
. The color of diamonds in English color: Diamond 4C classification standard 2
The diamond is equivalent to a prism. It can divide the light into a colorful light and can make these light. The reflection is formed to form a colorful flash, just like when we pass through the color glasses, the color of the diamond will be a filter. This reduces the reflection of reflex light. The lighter the color of the diamond, the stronger the flash. The higher the color level. D level: completely colorless. The highest color level, extremely rare e grade: colorless. Only gem appraisal experts can detect trace colors. It is a very rare diamond F grade: colorless. A small amount of colors can only be detected by jewelry experts, but it is still considered colorless. It belongs to high -quality diamonds. g -H: close to colorless. When compared with higher color diamonds, there are slight colors. But this color -grade diamonds still have high value. i -J: Close to colorless. Slight colors can be detected. High value. k — M level: The color is darker and the fire color is poor, so we do not provide it, and it is recommended that customers do not use it. N -Z -Z: The color is darker and the fire color is poor, so we do not provide it, and we recommend that customers do not use it.
. Cut the diamond cut English Cut: Diamond 4C grading standard three
In the 4C standard measured by diamond value measurement, only the car worker is directly affected by artificially affected. Although diamonds can be processed into a variety of different shapes (fancy) to satisfy different tastes, the degree of exceptions of the car worker directly affect the diamonds to get angry and flash. The diamonds without processing have no gloss. Only by the well -trained master's accurate design and the carving of the clever work, can the diamond veil can be unveiled, so that the nature of the light is used to present a rainbow -like "fire color", and it has flashes. Features. The basic forms of car workers include: round, pear -type, heart type, emerald, princess, olive type, oval type.
crown: The crown part is a trapezoidal part above the waist of the diamond. The role of the crown is the light that scattered into the diamond. When the light is shot into the diamond, the diamond will make the diamond brighter, making the diamond look like a colorful flame. In terms of round diamonds, the center of the crown has an eight -corner -shaped face (FACET), which is called tabletop; each side of the desktop has a triangle. ; There is a diamond -shaped face between each two triangle, called the Crown Facet; between each two kite face to face, there is a pair of updowing the waist. And arranged in pairs, symmetrical left and right, called upper face.
Girdle: The waist is the widest part of the diamond, a thin circle; if it is observed from the side of the diamond, the waist is a line. The effect of the waist is to protect the edge of the diamond, prevent, diamond rupture, and as the edge of gemstones. Pavilion is also called the pavilion: part of the triangle below the waist of the diamond. The effect of the diamond at the bottom of the diamond enters the light of the diamond through the crown and reflects your eyes. In terms of circular diamonds, there are 33 faces in the crown, with 24 aspect under the waist circumference, and 1 face -to -face with a sharp bottom, a total of 58 face -to -face. Diamond cutting is an important standard. Cutting according to national standards can be divided into good, good and general level. In addition to the above -mentioned three levels, there are also poor (POOR) levels. There is a certain proportion of various parts of the workmanship, which requires a carefully measured by instruments in order to know whether it is good, good or general. Diamonds of the same size, the same color, and the same net net degree, due to the quality of the cut, the price can be several times different. The quality of the cut directly affects the fire color of the diamond. The excellent diamonds exudes dazzling light, and the poor diamonds are not sharp on the edge, and the light is reduced. Nature gives the flaws of different characteristics of each diamond rough. However, through the cutter's cut, it can take its essence, abandon its dross, restore the natural beauty of diamonds, and create the greatest value. As shown in the figure below, to make the diamond fully exert its unique beauty light, it rely entirely on whether the proportion of diamond cutting is proper, as well as polishing quality, asymmetricity of asymmetry, and so on.
. The clarity of diamonds English Clarity: Diamond 4C classification standard 4
Is when gaze diamonds, you may see "defect" or "inner content"- It is usually formed with the composition of the crystal or distorted. The clarity represents the degree of transparency of diamonds, which is mainly rated from the volume, location and the number and flaws of the inner content. When viewing diamonds, gem scientists will use 10 times the large mirror and the standards of G.I.A. "American Gem Society" to identify the 11 levels of diamond clarity. Starting from the flawless (FL), it means that there are no flaws in the inner and surface of the diamond, and then to the lowest flaws (i3) in order, describing the inner content and flaws in the stone in the naked eye.
1.FL refers to the cleaning diamonds under 10 times gemstone magnifying the mirror, that is, the inside and outside of the gemstone are not seen 2.IF refers , But there may be a little flaw on the surface, which can be removed again. 3.vvs means that there are very small flaws on the pavilion or surface under the 10x gemstone magnifying glass. The difference between VVS1 and VVS2 is the latter that include very small cotton -shaped points and small stubbles. 4.vs refers to observing very small flaws in diamonds under 10 times gemstone. The difference between VS1 and VS2 is that the latter may have tiny cotton -like or small stubble. 5.Si means that the diamonds are easy to see the flaws under the 10x gemstone magnifying the mirror, but the naked eye cannot be seen. 6.i1, i2, and i3 refers to observing small flaws when observing diamonds under 10 times gemstone magnifying the mirror. It can just see the naked eye that it is easy to see, and there are obvious understanding and cracks. 7. All diamonds are observed with a large mirror with a 10x large mirror. Only the I3 level can be seen by the naked eye without effort.
Almost all diamonds are more or less contained in fine impurities or some growth lines, called "parcels" or "internal content". Because it is a naturally formed substance, diamonds will be All the characteristics of all crystalline processes are revealed, including a little other characteristics during the crystallization process. It is a black spot or white dot in the inside of the diamond. They are natural marks formed by diamonds. Because the nature, composition, location, and size of each diamond is different, this makes each diamond have unique characteristics, and the clarity of the diamond is evaluated based on the impurities, ingredients, positions, and size of the diamond. Usually the less bodies in diamonds, the smaller the diamonds, the more expensive the diamond is. Because it is difficult to find a completely indifferent diamond, the closer the value is, the higher the value.
Diamond 4C is introduced in detail. The performance of the diamonds with different 4Cs n00:00 / 00: 3370% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease by 10% →: single fast forward 5 seconds studio Here you can drag no longer appear in the player settings to reopen the small window shortcut key description
Diamond 4C refers to the standard of the quality evaluation of diamonds. Its diamond 4C includes: color color, weight cact, clarity Clarity and cutting Cut. Because the first letters of their four words are C, it is called 4C grading. This is an international general quality evaluation system.
The diamond clarity classification
each diamond has internal content, and the number, size, shape, and color of the inside will determine the clarity and characteristics of each diamond. Most of the diamond contains cannot be identified by the naked eye. The less inner containing, the more light refraction, making it double. We can use 10 times the large mirror to find a difference. The classification standards of the United States are: FL, IF, VVS1, VVS2, VS1, VS2, SI1, SI2, I1, I2, I3. (Note: FL is the best, decreases in order) Most of the gem-level diamonds, the color is colorless-light yellow series. When identifying the color of the diamond, compare the appraisal diamond with a set of international standard ratio than color stones. of. There are other colors of diamonds, such as: brown, orange, pink, blue and so on. D-G is a colorless level, and G-J is a near-color level. There is basically no collection and wearing significance from K to K-J.
Diamond weight grading
The weight of diamond is the easiest characteristic of 4C. Like other gems, the weight of the diamond is also measured with carats. Diamonds of the same quality, the larger the weight, the more precious. The current standard is that one carat is equal to 0.2g, and each carat is divided into 100 copies (or equivalent to 200 mg), so a 25 -point diamond weighs 0.25 carats.
The diamond cutting level
Ideal cutting: represents the standard that can only achieve first -class high -quality diamonds with only 3%. This cut makes the diamond reflect almost all the lights entering the diamond. An elegant and outstanding cut. Very easy to cut: It means about 15%of diamonds. It can reflect the light of diamonds and cut standards, but the price is slightly lower. Good cut: represent about 25%of diamond cut. It is the diamond reflected most of the light that enters the diamond.
diamond 4C parameter standard identification 1. How to see the weight level of carats?
carats are the units with heavy diamond meters. One carat is equal to one hundred points (0.50CT is 50point), and the weight is 0.2 grams. Essence Does 60 points look twice as large as 30 points, or twice the front of the two carat diamonds? This is wrong, because the diamond is cube, so the weight increases, and the proportion of its diameter increase is not the not. the same.
2. Carat weight points
a. The world's drilling output. If it is distinguished by size, the larger the carat weight, and the number is reduced, so the price of two carats is twice the price of one carat.
b. Broken diamond (below 0.08CT) may be much cheaper at per carat unit price, but because the inlaid process has increased the cost, all the finished products made of broken diamonds do not mean that the price of a single diamond of the same weight does not mean Low.
c. Do the diamond look better and better? If the larger the front of the diamond, the shallower the depth, the ratio of the whole one will be completely different. The moderate proportion is the correct method of selecting carat weight.
Weitation
1. How to see the level of clarity?
The identification of all clarity is based on 10 times the bottom. Observe its characteristics with the eyes of ordinary people, the marks on the surface of the diamond, and the inclusion inside the diamond. Determine the number, position, size, signs, and obvious degree of the two.
2. Select the method of clarity level
Step 1. Mainly the impression of the front of the entire diamond.
Step 2. Re shrinks to the top, down, left, right, and middle blocks to pay attention.
It step 3. I have carefully seen each aspect (including Crown, Pavilion Pavilion, waist circumference Girdle).
Step 4. Finally integrate the above steps to re -feel the clarity level under the first impression.
Step 5. Determine the true level of diamonds.
3. Points of clarity
The diamonds are minerals produced under the surface. In this case, the diamonds after cutting are completed. The diamond clarity level for gemstones accounts for about 10%of all ore output, and the VS clarity level is very rare. It can be imagined that there are not two exactly the same diamonds in the world. Therefore, the tags exclusive to this diamond are the best testimony to identify this diamond. This is the correctness and objectivity of maintaining the clarity classification.
color
1. How to see the color level?
The grading of white diamond color is from DEFGHIJ to XYZ. The color of DEF is the first choice for many people when choosing diamonds. Indeed, there are very few colorless colors of colorless, so that everyone is eager to own. G ~ J color range is the choice of price and actual needs. Generally, the naked eye viewing has been inlaid with well -established finished products. If it is not a very professional appraiser, it is not easy to separate the color.
2. Choose the method of color level
If the accurate resolution of the level, it is absolutely required than the color stone (). The conditions are:
1. Round diamonds, with no fluorescence ().
2. Moderate weight (0.30 ~ 0.40ct).
3. Cutting (above) and clarity (above SI1) are acceptable.
4. Number of 3 to 5 pieces, color.
3. Color points
1. You need to identify under the diamond light ().
2. The larger the color of the diamond, the more obvious the color of the yellow.
3. The background background color must be pure.
4. The inlaid diamonds watch the color from multiple angles.
5. Don't be too tired in mental state.
6. The evaluation of the two is reasonable.
cutting
1. How to see the level?
The perfect cut diamonds are to condense all the light from the external diamond, and then the desktop (table) and the crown department all reflect the light and fire color. The bottom cut is too deep, and the light cannot be refracted internally to produce light leakage; the bottom cut is too shallow, and the light immediately goes from the bottom. Neither of the diamond reflects the fascinating glory. If you cut too shallowly, you can see the Fish-Eye phenomenon from the front, and if you are too deep, you will see nailhead.
2. Choose the method of cutting level
The best cutting presents the brightest fire color. Most of the diamond fire is generated by the crown section (). ) It is the most exquisite craft technology to express the firecai.
3. Cut the main points
The measure (CUT) This measure is the only factors that the beauty of diamond can be enhanced by the only technical personnel. The effects of cutting diamond surfaces, proportions, symmetry (Symmetry) and polishing (Polish) plus changes in cutting surface angles, and the diamond diamond luster can have light (), fire light (), and flash (). The most ideal criterion for cutting is to reveal these three kinds of fire color.
Diamond 4C refers to diamond weight, diamond color, diamond clarity, and diamond cutting. Because their corresponding English words are cact, color, clarity, and cut, they are the first letters, so they are collectively referred to as diamond 4C. How many carats we often say are the units that describe diamond weight from the carat. 1 carat is equal to 0.2 grams, which is a relatively large diamond, the price is not low, and tens of thousands of yuan is normal.
believe series Winter romantic DR proposal diamond ring
Compared with the weight of diamonds, diamond color, diamond clarity and diamond cutting are relatively rarely heard, but it is also important. In terms of color, it is mainly for white diamonds. The closer the color is, the better the colorless color, the better the clarity, the better, the better. After all, it will inevitably affect the beauty if there is impurities inside the diamond. Cutting is also a relatively obvious item. If the cut is not good, the diamond will look dull, and the high -end diamond will be particularly brilliant and amazing.
"4C" is the measure of measurement of a diamond value and quality. The so -called "4C" is the abbreviation of four English words starting with C. It refers to the caraat weight, clarity, color, and cut (CUT). Just comprehensively appreciate the four points of "4C", you can easily understand the value and quality of a diamond. Diamond price = weight color clarity cutting.
4c Evaluation Standard:
The 4C of diamonds is the main decisive factor of the value of diamond nude diamond. The 4C grading standard of the diamond is: weight cact, color color, cutting CUT, clarity Clarity. Therefore, the diamond 4C classification is a jewelry knowledge that must be known to buy or invest in diamond naked diamonds. The following is a detailed and comprehensive introduction to the 4C grading standard of diamonds. I hope it will be helpful to everyone.
. The weight of diamonds in English Carat: One of the diamond 4C classification standards
The weight of diamond is the easiest characteristic of 4C. Like other gems, diamonds, diamonds The weight is also measured by carats. Diamonds of the same quality, the larger the weight, the more precious. The word carat comes from a kind of "small horn tree" seeds. Because the weight of this seed has an amazing consistency, the weight of the diamond is used in the early stage, and one carat is equal to the weight of a small horn tree seed. The current standard is that one carat is equal to 0.2g, and each carat is divided into 100 copies (or equivalent to 200 mg), so a 25 -point diamond weighs 0.25 carats. IGI uses an electronic balance with a accuracy of 0.00001 carat, which is called accurate diamond weight. The diamond weight is recorded in the diamond appraisal report and accurately to the two digits after the decimal point. If you already have a budget in your heart, you will find a series of high -quality diamonds in your budget range for you to choose from. If the other party is very active or is not used to wearing jewelry, and may collide or damage her new ring, you better consider choosing a small model of diamonds or a precept for protecting large diamonds. At the same time, you must also remember: the smaller the size of the finger, the larger the diamond will look bigger. A 1 -caramel diamond is much larger than wearing on the finger No. 10 on the finger 5. If you are ready for the precepts, make sure your choice is suitable for this precepts, you can check what kind of gem you should need for the diamond model instructions or consulting jewelery consultation.
. The color of diamonds in English color: Diamond 4C classification standard 2
The diamond is equivalent to a prism. It can divide the light into a colorful light and can make these light. The reflection is formed to form a colorful flash, just like when we pass through the color glasses, the color of the diamond will be a filter. This reduces the reflection of reflex light. The lighter the color of the diamond, the stronger the flash. The higher the color level.
D level: completely colorless. The highest color level, extremely rare
e grade: colorless. Only gem appraisal experts can detect trace colors. It is a very rare diamond
F grade: colorless. A small amount of colors can only be detected by jewelry experts, but it is still considered colorless. It belongs to high -quality diamonds.
g -H: close to colorless. When compared with higher color diamonds, there are slight colors. But this color -grade diamonds still have high value.
i -J: Close to colorless. Slight colors can be detected. High value.
k — M level: The color is darker and the fire color is poor, so we do not provide it, and it is recommended that customers do not use it.
N -Z -Z: The color is darker and the fire color is poor, so we do not provide it, and we recommend that customers do not use it.
. Cut the diamond cut English Cut: Diamond 4C grading standard three
In the 4C standard measured by diamond value measurement, only the car worker is directly affected by artificially affected. Although diamonds can be processed into a variety of different shapes (fancy) to satisfy different tastes, the degree of exceptions of the car worker directly affect the diamonds to get angry and flash. The diamonds without processing have no gloss. Only by the well -trained master's accurate design and the carving of the clever work, can the diamond veil can be unveiled, so that the nature of the light is used to present a rainbow -like "fire color", and it has flashes. Features. The basic forms of car workers include: round, pear -type, heart type, emerald, princess, olive type, oval type.
crown: The crown part is a trapezoidal part above the waist of the diamond. The role of the crown is the light that scattered into the diamond. When the light is shot into the diamond, the diamond will make the diamond brighter, making the diamond look like a colorful flame. In terms of round diamonds, the center of the crown has an eight -corner -shaped face (FACET), which is called tabletop; each side of the desktop has a triangle. ; There is a diamond -shaped face between each two triangle, called the Crown Facet; between each two kite face to face, there is a pair of updowing the waist. And arranged in pairs, symmetrical left and right, called upper face.
Girdle: The waist is the widest part of the diamond, a thin circle; if it is observed from the side of the diamond, the waist is a line. The effect of the waist is to protect the edge of the diamond, prevent, diamond rupture, and as the edge of gemstones. Pavilion is also called the pavilion: part of the triangle below the waist of the diamond. The effect of the diamond at the bottom of the diamond enters the light of the diamond through the crown and reflects your eyes. In terms of circular diamonds, there are 33 faces in the crown, with 24 aspect under the waist circumference, and 1 face -to -face with a sharp bottom, a total of 58 face -to -face. Diamond cutting is an important standard. Cutting according to national standards can be divided into good, good and general level. In addition to the above -mentioned three levels, there are also poor (POOR) levels. There is a certain proportion of various parts of the workmanship, which requires a carefully measured by instruments in order to know whether it is good, good or general. Diamonds of the same size, the same color, and the same net net degree, due to the quality of the cut, the price can be several times different. The quality of the cut directly affects the fire color of the diamond. The excellent diamonds exudes dazzling light, and the poor diamonds are not sharp on the edge, and the light is reduced. Nature gives the flaws of different characteristics of each diamond rough. However, through the cutter's cut, it can take its essence, abandon its dross, restore the natural beauty of diamonds, and create the greatest value. As shown in the figure below, to make the diamond fully exert its unique beauty light, it rely entirely on whether the proportion of diamond cutting is proper, as well as polishing quality, asymmetricity of asymmetry, and so on.
. The clarity of diamonds English Clarity: Diamond 4C classification standard 4
Is when gaze diamonds, you may see "defect" or "inner content"- It is usually formed with the composition of the crystal or distorted. The clarity represents the degree of transparency of diamonds, which is mainly rated from the volume, location and the number and flaws of the inner content. When viewing diamonds, gem scientists will use 10 times the large mirror and the standards of G.I.A. "American Gem Society" to identify the 11 levels of diamond clarity. Starting from the flawless (FL), it means that there are no flaws in the inner and surface of the diamond, and then to the lowest flaws (i3) in order, describing the inner content and flaws in the stone in the naked eye.
1.FL refers to the cleaning diamonds under 10 times gemstone magnifying the mirror, that is, the inside and outside of the gemstone are not seen
2.IF refers , But there may be a little flaw on the surface, which can be removed again.
3.vvs means that there are very small flaws on the pavilion or surface under the 10x gemstone magnifying glass. The difference between VVS1 and VVS2 is the latter that include very small cotton -shaped points and small stubbles.
4.vs refers to observing very small flaws in diamonds under 10 times gemstone. The difference between VS1 and VS2 is that the latter may have tiny cotton -like or small stubble.
5.Si means that the diamonds are easy to see the flaws under the 10x gemstone magnifying the mirror, but the naked eye cannot be seen.
6.i1, i2, and i3 refers to observing small flaws when observing diamonds under 10 times gemstone magnifying the mirror. It can just see the naked eye that it is easy to see, and there are obvious understanding and cracks.
7. All diamonds are observed with a large mirror with a 10x large mirror. Only the I3 level can be seen by the naked eye without effort.
Almost all diamonds are more or less contained in fine impurities or some growth lines, called "parcels" or "internal content". Because it is a naturally formed substance, diamonds will be All the characteristics of all crystalline processes are revealed, including a little other characteristics during the crystallization process. It is a black spot or white dot in the inside of the diamond. They are natural marks formed by diamonds. Because the nature, composition, location, and size of each diamond is different, this makes each diamond have unique characteristics, and the clarity of the diamond is evaluated based on the impurities, ingredients, positions, and size of the diamond. Usually the less bodies in diamonds, the smaller the diamonds, the more expensive the diamond is. Because it is difficult to find a completely indifferent diamond, the closer the value is, the higher the value.
4C diamond 4C: cut (CUT), color (color), clarity, carat weight (carat weight) is the main criterion to reflect the value of the diamond value
Diamond 4C is introduced in detail. The performance of the diamonds with different 4Cs
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