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Diamond Classification Classification
FL, IF Class Diamond:
FL (Flawless) —— Observe under ten times a magnifying glass, there is no inner containing or lack of gap.
if (Flawless) —The observation of the mirror at ten times, there is no inner content, only a small gap.
vvs1, VVS2 level diamonds:
vvs1 (very very small) — diamonds have extremely small internal contents, and it is difficult to observe under ten times magnifying the mirror.
vvs2 (very very small) -the diamond has extremely small internal contents, and it is difficult to observe under ten times a magnifying glass.
vs1, VS2 diamonds:
vs1 (very small) — Diamonds have small internal contents, and it is difficult to observe under ten times magnifying the mirror.
vs2 (Very Small) — Diamonds have small internal contents, and it is easier to observe under ten times magnifying mirror.
SI1, SI2 Class diamonds:
The diamonds have obvious internal contents, and Si1 (Small) under ten times magnifying the mirror is easy to observe, and SI2 (Small) is easy to observe.
i1, I2, I3 level diamonds: It is not recommended to choose such a clarity level diamond.
fl/if completely pure diamonds are the most popular and most expensive. However, many diamonds have some internal contents, traces, mineral traces, or other tiny characteristics, which will reduce the purity beauty of the diamond. NGTC, GIA, and HRD organizations use a series of more detailed rules and standards to overview the type of diamond -containing type.
Which level of diamond clarity is good?
The better the price of the diamond, the higher the price. The diamonds of VVS/VS clarity are high, but they are cheaper than if, FL -grade diamonds, and do not contain obvious flaws, and will not reduce the beauty of diamonds. When the clarity of diamonds does not have special requirements, the choice of SI -level cost performance is the highest, and the naked eye cannot distinguish the SI and VS levels. Moreover, defects are part of the diamond, which is a unique label made by nature for each diamond.
In nature, the pure and indifferent diamonds are almost not existed. Most diamonds always contain small or less small wraps or flaws such as cracks and growth patterns. It hinders the spread of light in the diamond, reducing the diamond The brightness of the diamond affects the scattered diamond. Obviously, the clarity is also an important factor in evaluating the quality of diamonds.
The clarity refers to the amount of defects such as impurities, cracks and growth patterns contained in diamonds. The clarity classification refers to the grade division of the inside and external defects inside and outside of the diamond under 10 times.
This defects are factors that affect diamond clarity levels. Different types of flaws have different degrees of influence on the clarity.
. The type of defect
The defects refers to all the characteristics that affect the diamond clarity. It includes internal flaws and external flaws.
1, internal defect type
In internal defects refer to the internal or diamond surface flaws. Observing internal defects is very important because they are the main factor that determines the level of diamond clarity.
(1), crystal;
(2), dotted objects;
(3), cloud -shaped object;
(4), feather -like;
(5), whisper waist;
(6), internal literary science;
n (7), dual crystal center;
(8), inner concave original crystal surface;
(9), laser holes;
(10) Truis;
(11), breaking.
2, external defect type
The external flaw type may be caused by accidental accidents when cutting or wearing. External characteristics are not important internal characteristics, because most of them can be improved by re -polishing and there are no major weight loss.
(1), rough crystal surface;
(2), scratch;
(3), wear; R n (4), point;
(5), polishing lines;
(6), burning marks;
n (7) , Surface texture;
(8), extra face;
(9), gap;
(10), pit or holes ( Empty).
. The standard of clarity classification
1, GIA diamond clarity grading system
(1), FL (no -time level): 10 times more Observe under the mirror that there are no flaws in the inside and outside of the diamond;
(2), IF (internal no -internal): Although there is no flaw inside the diamond, there are very small sutra on the outside. ;
(3), VVS (extremely micro -flaw): divided into two levels of VVS1 and VVS2, it is difficult to find extremely small or very unknown flaws under 10 times large mirror;
(4), VS (micro -flaw level): divided into VS1 and VS2 levels, 10 times the size, quantity, and location of the defects under the large mirror between difficult determination and a certain degree of easy determination.
(5), Si (small flaw): divided into SI1 and SI2 levels, significant flaws, easy to see under 10 times large mirror. When the diamonds of SI2 are observed from the side of the pavilion, the package can be seen in the naked eye.
(6), I (defect level): divided into I1, i2, and i3 levels, i1: 10 times the large mirror is obvious, the naked eye observes some difficulties from the crown, and the internal defects do not affect its brightness ; I2: Internal defects are large and large, visible to the naked eye, and affecting brightness; i3: Da internal defects are not only visible to the naked eye, but also weaken the transparency and brightness of diamonds, but also affect their durability.
2, the national diamond clarity grading system
(1), LC (lack of time under the mirror): Under 10 times the large mirror, the internal and external flaws of the diamond;
(2), VVS1 (first level extremely micro flaw): Diamonds have extremely small flaws, and it is difficult to observe under 10 times large mirror;
(3), VVS2 (secondary pole pole Micro flawed): Diamonds have extremely small flaws, and it is difficult to observe under 10 times large mirror;
(4), VS1 (first micro -flaw): Diamonds have small flaws, and it is difficult to use 10 times large mirror. Observation;
(5), VS2 (secondary micro flaw): Diamonds have small flaws, and it is easier to observe under 10 times large mirror; First -level defects): Diamonds have obvious defects, and are easy to observe under 10 times large mirror;
(7), SI2 (second -level flaw): Diamonds have obvious defects, and it is easy to observe under 10 times large mirror. ;
(8), P1 (1st level of defect): Diamonds have obvious flaws, visible to the naked eye;
(9), P2 (second -level defect): Diamond It has obvious flaws, and it is easy to see;
(10), P3 (three -level heavy flaws): Diamonds have extremely obvious flaws, and the naked eye is easy to see. rnrn三、净度分级的方法rnrn 目前钻石净度分级的方法仍采用在10倍放大镜下，用比色灯或其它日光灯，对钻石内、 External defects are divided in grade.
(1), grading conditions
1, lens amplification multiple: International specifications to determine the clarity level of diamonds must be used by correction (correction spherical portion difference and color difference between color difference ) 10 times the big mirror.
2, lighting conditions: When the clarity classification of diamonds, let the light enter the pavilion as much as possible. Diamonds should be placed near the front light source near the "light cone", and the light enters from the pavilion (dark domain lighting), which can avoid strong reflection on the surface. Dark domain lighting is also often used under microscope, which can easily determine the location of the flaws.
3, personnel requirements: personnel engaged in the classification class must be a well -trained professional and technical personnel.
(2), grading program
1, clean diamond: At present, steam cleaning machines or ultrasonic detergents are used.
2, magnifying observation
(1), the diamond should be close to the edge of the light to let the light from the pavilion either; Be careful not to mistake the reflexes of the tweezers as the characteristics of the diamond;
(3), observe the diamond crown; n
(5), clamp the countertop or bottom surface of the diamond with a mule, observe all parts of the waist and edge, and pay attention to finding small feathers, fibrous waist and rough crystal surface.
(3) The characteristics of the defect
(4) Note
1, the clarity must be thorough and clean before the clarity is graded. Clean diamonds;
2, the same moment should be observed at the same angle at the same angle;
3 should not be too long; Check that the dust is the most headache when the dust is graded;
5, the location of the diamond flaws is often closer to the surface;
6, in net net When the degree is classified, a certain flaw is sometimes seen in the same direction, which is caused by the deficiency of internal reflection and composite vision.
. Determine the clarity level
1, the size of the defect: the larger the flaw, the easier it is to be discovered, the lower the level; The position of defects: the closer to the central part, the greater the impact on the clarity;
3, the number of defects: the more the quantity, the lower the clarity level; The more obvious the contrast between the overall color of the flaw and the diamond, the lower the clarity level; the type of
5, the type of defect: different types of defects on the precipitation;
6, influence of defects: The number of reflection in the influence of defects in diamonds is also a factor that affects the clarity.
. The quality grading rules of inlaid diamonds
It brought some difficulties due to the clarity and color observation of the inlaid to the diamond, which cannot be measured. Therefore, the quality of inlaid diamonds can only be divided by rough claims and color levels.
The clarity of inlaid diamonds is divided into: LC, VVS, VS, SI, and P level.
The color inlaid diamonds are divided into three levels: high -white, white, and light yellow and white.
The quality of inlaid diamonds is divided into five levels: excellent, good, good, better and general.
The snow diamond advice:
1. Diamonds are best classified for bare diamonds.
2, do not try to go to the diamond grading yourself, because the diamond grading must undergo professional training and a certain practical experience and a suitable environment to conclude the correct conclusion.
Pay content for time limit to check for freenReplynnThe price of diamonds is determined by the 4C parameter. Because the color of the diamond is equivalent to a high -quality filter, the role is to reduce the reflection of reflex light. The whiter the color of the diamond, the stronger the flashing color of the diamond. Similarly, the more colorless diamonds are relatively yellow than the yellow tone. According to the different degrees of stones from shallow to deep, the level is divided into D, E, F, G, I-J, K-L, M, N-O, P-R, S-Z. Most gem -level diamond colors are between colorless and light yellow. Below is the level diagram corresponding to the color of the diamond.nThe price of diamonds is determined by the 4C parameter. Because the color of the diamond is equivalent to a high -quality filter, the role is to reduce the reflection of reflex light. The whiter the color of the diamond, the stronger the flashing color of the diamond. Similarly, the more colorless diamonds are relatively yellow than the yellow tone. According to the different degrees of stones from shallow to deep, the level is divided into D, E, F, G, I-J, K-L, M, N-O, P-R, S-Z. Most gem -level diamond colors are between colorless and light yellow. Below is the level diagram corresponding to the color of the diamond.nMore 2nBleak
Diamond 4C level is an important factor in judging the value of diamonds, which contains diamond weight, cutting, color and clarity. The clarity refers to the observation of the professionals under 10 times the large mirror. How much the diamond contains, and the diamond clarity is the amount of defects inside the diamond. To understand the quality of diamonds, in addition to the clarity, other 3Cs need to be judged.
Generally, the clarity of diamonds is divided into five levels:
① There is no time -grade LC under the mirror: under 10 times the large mirror, the inside and the outside are flawless; Very small flaws;
③ micro -flaw -level VS: 10 times under the large mirror, there are very small flaws;
④ micro -flaw -level SI: 10 times under mirror, there are obvious flaws;
⑤ heavy flaw level level P (also known as level I): The defect can be visible to the naked eye.