How to explain the 4C of diamonds

Dana

October 10, 2022 at 1:12 am

The clarity of the diamond 4C
->
Is when the diamond is gaze, the flaws or internal content may be seen, which 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.
Gemantists will use 10 times large mirror and based on the standards of G.I.A. American Gem Society to identify the 11 levels of diamond claims based on the standards of G.I.A. American Gem Society. 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.
The content below can better guide you how to observe the clarity of diamonds.
1. FL refers to the cleaning of diamonds under 10 times gemstone, that is, the inside and outside of the gemstone are not seen.
2. IF refers to observing no defects inside the diamond under 10 times gemstone, but there may be a little flaw on the surface, and it can be removed by reorganization.
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 diamond is 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. You can just see the naked eye that you can see the naked eye.
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 contain slightly or less impurities or some growth lines, called "parcels" or "inner content". Because it is a naturally formed substance, diamonds will reveal all crystals The characteristics of the process, including the crystallization process, will penetrate a little other characteristics. Black or white spots will appear in the inside of the diamond. They are natural marks formed by diamonds.
It because the nature, ingredients, positions, and size of each diamond is different, this makes each diamond have unique characteristics, and the clarity of the diamond is Let's evaluate. 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 to the value of no time, the higher the value.

The weight of diamond 4C
->
is equal to 0.2 grams, which is usually abbreviated as "CT". Carat in Greece originated from "Kerate", refers to long -horn bean trees, a plant that has widely popularized from East Asia to the Middle East. Because its fruits are called nearly consistent weight, long -horn bean trees are used as heavy units for jewelry and precious metals.
The relationship between weight and volume

The weight of diamonds is the easiest characteristic of 4C. Like other gems, the weight of the diamond is also measured with carats. 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, so a 25 -point diamond weighs 0.25 carats. Diamonds of the same quality, the larger the weight, the more precious.
The weight or size of the diamond is measured by carat [CT]. 1 carat is equal to 0.2 grams, and 1 carat is divided into 100 points (or equivalent to 200 mg). 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.

The color of diamond 4C
->
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. Among them, the most colorful diamonds, in the IGI diamond appraisal report, was rated as a dark color and called the color diamond "Fancy".
The color mechanism of diamond is a very complicated problem. Over the years, it has been the focus of many research structures. Under the ideal state, because the diamond is a complete shaft crystal crystal, it is not selectively absorbed within the visible light range, so it shows colorlessness. However, the natural colorless and pure diamonds are extremely scarce. For a large part of the diamonds, because of its long growth process, it is affected by the external growth environment, which causes its lattice to be damaged, causing the color of different shades to occur. Essence
The color of diamonds mainly has three major series. That is: the yellow series, including colorless, light yellow to yellow diamonds; the causes of these colors are mainly caused by the following four factors:
. The color of the lattice impurities
is well known that the diamonds are mainly carbon (C) Element composition. One carbon atom is connected to the form of covalent bonds in the form of covalent, which is connected in a common price bond to form a stand -up heart grid structure in three -dimensional space. In addition, it also contains a small amount of impurities such as nitrogen (N), boron (B), and hydrogen (H). It replaces carbon atoms in the diamond structure and is connected to other carbon atoms to produce different colors.
1. The impact of impurities nitrogen on diamond color
The impurities in the lattice of impurities nitrogen due to 7, the outermost layer has 5 electrons, one more than carbon. When occupying the carbon lattice position, the four electrons are bound by the covalent bond, while the excess electrons are constrained less, and only smaller energy can be separated from nitrogen atoms. When the electrons absorb the energy of a wave of light in the visible light range, you can get rid of the nitrogen atom and cause a jump to make the diamond yellow. Due to the differences in the wavelength of absorption, different centers appear, and there are five forms of impurities nitrogen in diamonds.

2. The impact of impurities boron on diamond color
The existence of impurities boron is the reason why diamonds produce blue. The number of atomic order of the boron is 5, and there are 3 electrons in the outermost layer, one less than carbon, and cannot meet the requirements of the 4 atomic bonds. A "empty position" is generated in the covalent bond. Electronic movement is filled, making diamonds blue. Natural blue diamonds have no typical absorption peak. It belongs to the IIB diamond, which is a semiconductor.

. The effect of impurities on diamond color
According to the latest research, if diamonds contain only impurities hydrogen, no boron and nitrogen, diamonds will also appear blue. But this study needs to be further confirmed.

The 4C cutting of diamond
->
In the 4C standard measured by diamond value, 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.
Each diamond consists of three basic parts, the crown, waist, and bottom.
Crown (CROWN): The crown 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, called tabletop; each side of the desktop has a triangular face ; 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 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 the diamond from cracking, and be the edge of gemstones.
The bottom (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.
The cutting of diamonds 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.

4 thoughts on “How to explain the 4C of diamonds”

Jessie
October 10, 2022 at 1:12 am

The 4C standards created by GIA include: color (color), clarity, cut (cut) and carat weight.
1, diamond color: refers to the colorlessness of the diamond.
For most precious diamonds, its color appraisal standard depends on its colorlessness. A diamond that does not contain impurities and perfect structures is like pure water droplets. It has no color and has high value. GIA founded the color grading system of the D-Z. By comparing the diamond to the color stones under the condition of accurate controlling lighting and observation conditions to identify its colorlessness.
2, diamond clarity: refers to the degree of its internal content and surface features.
Natural diamonds are formed by carbon in high temperature and high pressure environments. This process also leads to the internal characteristics of each diamond, which is called "inner content", and on the surface of the diamond is called "surface feature".
3, diamond cutting: complex process and superb cutting skills.
Only after carefully carved grinding ratio, symmetry, and polishing, can the unique light of diamonds perfectly show the bright light of diamonds. Cutting is essential for the appearance and value of diamonds, and is the most complicated and most technical requirements for appraisal standards in the 4C standard.
4, diamond carat weight: carat is the measurement standard for diamond weight.
1 carat is equal to 200 mg. The larger the diamond, the higher the degree of rarity. As a result, the price of diamonds will increase with the increase of carat weight. However, even if the weight of the two diamonds is the same, its value (and price) may be very different. Because the value of diamonds also depends on the other three standards in the 4C standard: clarity, color and cutting.
The expansion data
gia, the founder of the American Gem Institute, Robert M. Shipley, established GIA in Los Angeles, USA in 1931. Initially, he used night schools and correspondence to train jewelers to evaluate the wholesale price.
. In 1953, GIA founded the first laboratory in New York, began to issue a diamond appraisal report, and then set up two other laboratories in Santamondica and LA urban area in California. The official name is the gem industry appraisal company GEM Trade .inc (GTL), GTL belongs to GIA full -time appraisal.
gia is an organization of non -profit business. It is established by the well -known jewelry merchants and social celebrities in the United States. It is an appraisal research institution shared by American jewelry industry. So far, GIA has 14 teaching institutions worldwide. Professional research, sales, appraisal and other courses have cultivated high -quality jewelry practitioners, and also promoted GIA's lofty reputation in the industry.
Reference information Source: Baidu Encyclopedia -Diamond 4C classification

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Dana
October 10, 2022 at 1:12 am

The clarity of the diamond 4C
->
Is when the diamond is gaze, the flaws or internal content may be seen, which 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.
Gemantists will use 10 times large mirror and based on the standards of G.I.A. American Gem Society to identify the 11 levels of diamond claims based on the standards of G.I.A. American Gem Society. 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.
The content below can better guide you how to observe the clarity of diamonds.
1. FL refers to the cleaning of diamonds under 10 times gemstone, that is, the inside and outside of the gemstone are not seen.
2. IF refers to observing no defects inside the diamond under 10 times gemstone, but there may be a little flaw on the surface, and it can be removed by reorganization.
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 diamond is 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. You can just see the naked eye that you can see the naked eye.
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 contain slightly or less impurities or some growth lines, called "parcels" or "inner content". Because it is a naturally formed substance, diamonds will reveal all crystals The characteristics of the process, including the crystallization process, will penetrate a little other characteristics. Black or white spots will appear in the inside of the diamond. They are natural marks formed by diamonds.
It because the nature, ingredients, positions, and size of each diamond is different, this makes each diamond have unique characteristics, and the clarity of the diamond is Let's evaluate. 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 to the value of no time, the higher the value.

The weight of diamond 4C
->
is equal to 0.2 grams, which is usually abbreviated as "CT". Carat in Greece originated from "Kerate", refers to long -horn bean trees, a plant that has widely popularized from East Asia to the Middle East. Because its fruits are called nearly consistent weight, long -horn bean trees are used as heavy units for jewelry and precious metals.
The relationship between weight and volume

The weight of diamonds is the easiest characteristic of 4C. Like other gems, the weight of the diamond is also measured with carats. 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, so a 25 -point diamond weighs 0.25 carats. Diamonds of the same quality, the larger the weight, the more precious.
The weight or size of the diamond is measured by carat [CT]. 1 carat is equal to 0.2 grams, and 1 carat is divided into 100 points (or equivalent to 200 mg). 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.

The color of diamond 4C
->
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. Among them, the most colorful diamonds, in the IGI diamond appraisal report, was rated as a dark color and called the color diamond "Fancy".
The color mechanism of diamond is a very complicated problem. Over the years, it has been the focus of many research structures. Under the ideal state, because the diamond is a complete shaft crystal crystal, it is not selectively absorbed within the visible light range, so it shows colorlessness. However, the natural colorless and pure diamonds are extremely scarce. For a large part of the diamonds, because of its long growth process, it is affected by the external growth environment, which causes its lattice to be damaged, causing the color of different shades to occur. Essence
The color of diamonds mainly has three major series. That is: the yellow series, including colorless, light yellow to yellow diamonds; the causes of these colors are mainly caused by the following four factors:
. The color of the lattice impurities
is well known that the diamonds are mainly carbon (C) Element composition. One carbon atom is connected to the form of covalent bonds in the form of covalent, which is connected in a common price bond to form a stand -up heart grid structure in three -dimensional space. In addition, it also contains a small amount of impurities such as nitrogen (N), boron (B), and hydrogen (H). It replaces carbon atoms in the diamond structure and is connected to other carbon atoms to produce different colors.
1. The impact of impurities nitrogen on diamond color
The impurities in the lattice of impurities nitrogen due to 7, the outermost layer has 5 electrons, one more than carbon. When occupying the carbon lattice position, the four electrons are bound by the covalent bond, while the excess electrons are constrained less, and only smaller energy can be separated from nitrogen atoms. When the electrons absorb the energy of a wave of light in the visible light range, you can get rid of the nitrogen atom and cause a jump to make the diamond yellow. Due to the differences in the wavelength of absorption, different centers appear, and there are five forms of impurities nitrogen in diamonds.

2. The impact of impurities boron on diamond color
The existence of impurities boron is the reason why diamonds produce blue. The number of atomic order of the boron is 5, and there are 3 electrons in the outermost layer, one less than carbon, and cannot meet the requirements of the 4 atomic bonds. A "empty position" is generated in the covalent bond. Electronic movement is filled, making diamonds blue. Natural blue diamonds have no typical absorption peak. It belongs to the IIB diamond, which is a semiconductor.

. The effect of impurities on diamond color
According to the latest research, if diamonds contain only impurities hydrogen, no boron and nitrogen, diamonds will also appear blue. But this study needs to be further confirmed.

The 4C cutting of diamond
->
In the 4C standard measured by diamond value, 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.
Each diamond consists of three basic parts, the crown, waist, and bottom.
Crown (CROWN): The crown 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, called tabletop; each side of the desktop has a triangular face ; 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 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 the diamond from cracking, and be the edge of gemstones.
The bottom (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.
The cutting of diamonds 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.

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Ethel
October 10, 2022 at 1:12 am

It's not enough to die. It is best to have a real thing. When telling others, point out on the diamond little by little. This makes people understand better.

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Jordan
October 10, 2022 at 1:12 am

Shortcut keys to describe space: Play/ pause ESC: Exit full screen ↑: increased by 10% ↓: A amount of volume decreases 10% →: Single fast forward 5 seconds ←: Press 5 seconds in a single fast retreat. You can re -open the small window in the player settings and play the error, please refresh your try

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How to explain the 4C of diamonds

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