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) Grade
Most gem-level diamonds, the color is colorless-light yellow color 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.
The 4C standard of diamonds refers to: diamond weight, diamond cut (CUT), diamond color (color), diamond clarity should be considered from the following four aspects (4C): (1) Column: The best colorlessness is the best. The deeper the color, the worse the quality. In the color grading of colorless diamonds, the top color is D color, and it is arranged to Z in turn. We only say that from D to J's color level, D-G is a colorless level, G-J is a near-color level, from K. There is basically no sense of collection and wearing. Because the diamonds will gradually be yellow from K, when we choose diamonds, try to choose the color of more than H. Although the level of i-J is also in a near-color category, we can notice a slight yellow yellow. Colorful diamonds, such as: red, pink, green, blue, etc., and belong to the treasures of diamonds, which are expensive. Among them, the red diamond is the most precious. (2) Clarity: The basis of the clarity classification is the position of the inner content, the size and the number of quantity are divided. The clarity level can be divided into FL, if, VVS1, VVS2, vs2, vs2, SI1, SI3, SI3, P1, P2, P3. More, the more obvious the location is, the worse the quality, and the price should be reduced accordingly. (3 carat weight (cara): In the same case of the other three C, the price of the diamond is proportional to the square in weight. The greater the weight, the higher the value. The weight of the diamond is based on carats. Cla (CT) = 0.2 grams (g). Average one carat is divided into one hundred copies, each of which is one point, the target of the mall price is 0.3CT, 0.4ct is the 30 points and 40 points we said. (4) Cut (CUT): The rough stone of a diamond, even if it is thrown on the road, will not pay attention. It is to give it a second life to make it a gorgeous fire color. The geometric shape of the various petals of the finished naked diamond and the way of its arrangement. The cutting is divided into cutting ratio, polishing, and modification. Each item has five levels, from high to low. , FAIR, Poor. Generally, what we see is standard round diamond -type cutting. Top -cut stones, it can reach the closest to the perfect ratio , which is the three, which is the three, which is what we said. The item E X (Excellent) is cut, but the price of this cut will be slightly more expensive, because its income rate is relatively low, it will be about 5%higher than the price of not three EX cuts, but the three items will The fire color of EX's stones is definitely the most gorgeous. ...
Diamond 4C grade division and price change (diamond 4C level: diamond 4C refers to the parameters of four diamond weights of diamonds, diamond color (COLOR), diamond cut (CUT) diamond weight, Let ’s introduce the meaning of the diamond 4C level. diamond color: the measurement standard for the color of the diamond is founded by GIA, and its level is determined according to the color grading system of the D-Z. Within the range, the corresponding diamond price is also high; GHIJ is close to the colorless range, and as the color gradually deepen, the price gradually decreases; Diamond jewelry, there is no collection value. diamond weight: directly affects the price of diamonds in the diamond level. The weight is based on carats, 1 carat is equivalent to 0.2 grams, and is divided into 100 points. As the weight is weight. Increasing the value of diamonds will increase geometrically, and under the same quality, a 2 -carat diamond value is far higher than two 1 carat diamonds. The degree is determined by the flaws and positions of the diamond and the surface. (Small inner content) level, P level (inner content), no defect diamonds are very rare and precious, so the less flaws of diamonds, the higher the price. Diamonds can be highlighted after being carved and carved, which can highlight the fire color of the diamond and cause a deep flashing light. The cut level is divided into EX, VG, G, FAIR. The same diamonds of 3C will also cause differences due to different cuts.
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) Grade
Most gem-level diamonds, the color is colorless-light yellow color 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.
The 4C standard of diamonds refers to: diamond weight, diamond cut (CUT), diamond color (color), diamond clarity
should be considered from the following four aspects (4C):
(1) Column: The best colorlessness is the best. The deeper the color, the worse the quality. In the color grading of colorless diamonds, the top color is D color, and it is arranged to Z in turn. We only say that from D to J's color level, D-G is a colorless level, G-J is a near-color level, from K. There is basically no sense of collection and wearing. Because the diamonds will gradually be yellow from K, when we choose diamonds, try to choose the color of more than H. Although the level of i-J is also in a near-color category, we can notice a slight yellow yellow. Colorful diamonds, such as: red, pink, green, blue, etc., and belong to the treasures of diamonds, which are expensive. Among them, the red diamond is the most precious.
(2) Clarity: The basis of the clarity classification is the position of the inner content, the size and the number of quantity are divided. The clarity level can be divided into FL, if, VVS1, VVS2, vs2, vs2, SI1, SI3, SI3, P1, P2, P3. More, the more obvious the location is, the worse the quality, and the price should be reduced accordingly.
(3 carat weight (cara): In the same case of the other three C, the price of the diamond is proportional to the square in weight. The greater the weight, the higher the value. The weight of the diamond is based on carats. Cla (CT) = 0.2 grams (g). Average one carat is divided into one hundred copies, each of which is one point, the target of the mall price is 0.3CT, 0.4ct is the 30 points and 40 points we said.
(4) Cut (CUT): The rough stone of a diamond, even if it is thrown on the road, will not pay attention. It is to give it a second life to make it a gorgeous fire color. The geometric shape of the various petals of the finished naked diamond and the way of its arrangement. The cutting is divided into cutting ratio, polishing, and modification. Each item has five levels, from high to low. , FAIR, Poor. Generally, what we see is standard round diamond -type cutting. Top -cut stones, it can reach the closest to the perfect ratio
, which is the three, which is the three, which is what we said. The item E X (Excellent) is cut, but the price of this cut will be slightly more expensive, because its income rate is relatively low, it will be about 5%higher than the price of not three EX cuts, but the three items will The fire color of EX's stones is definitely the most gorgeous.
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Diamond 4C grade division and price change (diamond 4C level: diamond 4C refers to the parameters of four diamond weights of diamonds, diamond color (COLOR), diamond cut (CUT) diamond weight, Let ’s introduce the meaning of the diamond 4C level.
diamond color: the measurement standard for the color of the diamond is founded by GIA, and its level is determined according to the color grading system of the D-Z. Within the range, the corresponding diamond price is also high; GHIJ is close to the colorless range, and as the color gradually deepen, the price gradually decreases; Diamond jewelry, there is no collection value.
diamond weight: directly affects the price of diamonds in the diamond level. The weight is based on carats, 1 carat is equivalent to 0.2 grams, and is divided into 100 points. As the weight is weight. Increasing the value of diamonds will increase geometrically, and under the same quality, a 2 -carat diamond value is far higher than two 1 carat diamonds. The degree is determined by the flaws and positions of the diamond and the surface. (Small inner content) level, P level (inner content), no defect diamonds are very rare and precious, so the less flaws of diamonds, the higher the price. Diamonds can be highlighted after being carved and carved, which can highlight the fire color of the diamond and cause a deep flashing light. The cut level is divided into EX, VG, G, FAIR. The same diamonds of 3C will also cause differences due to different cuts.
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