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5 thoughts on “black matte jewelry boxes wholesale There are F-G, H, I-J. Why do there is no G-H, H-I grade in the color grading of diamonds?”
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jewelry supply wholesale usa The color level of diamonds is divided into D, E, F, G, H, I-J, K-L, M, N-O, P-R, S-Z. G-level, H-level, and I-J level indicate close to colorless. The color of G and H diamonds is very different in the colorless range, and the same is true for H and i, so the level is separated.
D, E, F is within the colorless range; G, H, I, J belongs to the colorless range; K, L, M are slightly pale yellow;
The diamonds are called "the king of gems" in the world with their highest hardness, crystal clear texture and glorious characteristics. It is a symbol of success, elegance, loyalty, eternal and innocence, so it is loved by people. Diamonds are the largest gems in the world's jewelry trade.
The expansion information
D level: completely colorless. The highest color level is extremely rare. E -grade: colorless. Only gem appraisal experts can detect trace colors. It's a very rare diamond. F -level: 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: Near colorless. Slight colors can be detected. High value.
k -M level: The color is dark and the fire color is poor, so the wedding diamond ring network is not provided. It is also recommended that customers not use it. N -Z level: The color is darker and the fire color is poor, so the wedding diamond ring network is not provided. It is also recommended that customers not use it.
Reference information Source: Baidu Encyclopedia-Diamond Color Class
sorority jewelry wholesale Clearness
FL flawless
IF internal flawless, the surface is slightly flawed
Vvs1. Fine defects that cannot be seen)
vs1. VS2. Viste in very small internal contents (fine flaws that cannot be seen by the naked eye)
si1. Si2. Small inner content (Can't see the naked eye)
I1. I2. I3. Grade from English letters D to Z is divided into level 23-
D, E, F within the colorless range; The colorless range;
k, l, m slightly light yellow;
n is light yellow
to evaluate diamond grade--
diamonds are called "the king of gems" in the world with their highest hardness, crystal clear texture and glorious characteristics.
. It is a symbol of success, elegance, loyalty, eternity and innocence. Therefore, it is loved by people. Diamonds are currently the world's most transaction volume in trade in the world. Planting gems, since the introduction of light detection instruments such as heat guidance instruments, the authenticity of diamonds has become
is very simple, but how to evaluate the pros and cons of a diamond has become a diamond trade. The main problem in.
The latest national standard GB/T16554-1996 "Diamond Grade" stipulates that the factors for evaluating diamond levels
have four, that is, the color of the diamond (Color) , Clarity, Cut (CUT) and Carat weight. These four
are also called "4C" standard. "4C" is the first letter of color, clarity, cutting and carat weight. And 4C is an indispensable comprehensive element that evaluates the quality of diamonds. It is also a measure of the consumer to determine the value of a diamond value
.
The diamonds in the jewelry market, pure natural diamonds, and diamonds that have been treated with irradiation and filling. In fact, it is colorless, showing white in the white background), yellow diamonds, and color diamonds such as
red, green, blue, orange, etc. The type of diamonds also has diamonds with heart -shaped, oval, pear -shaped
. The most common diamonds in the market are white (colorless) standard round diamonds, so in the "4C" standard
The white (colorless) to light yellow (brown, gray) series,
The polished diamonds with more than 0.2 polished diamonds for grading, and cutting grades only for standard round -type cut diamond R n
(colorless) to light yellow (brown, gray) series, 1 carat ~ 0.1 carat diamond quality classification. The "4C" standard is not suitable for color
diamonds and radiation and filling diamond grades.
In the "4C" standard, the color of the diamond is divided into 12 levels. The method of grading is: set the pure colorless diamond to
The highest color pole -extremely white, 100 colors, use D, or it can also be written as D (100). In continuous increase,
has gradually decreased to E (99), f (9
, g (97), H (96), I (95), F (94), K (93), L (92), M (91), n (90)
and less than n (90). In the diamond appraisal certificate, the color level usually only uses English in English The letter indicates that when the color level is lower than N, general
The believe that the diamond is not suitable for jewelry.
Determined by professional and technical personnel to compare the ratio of diamonds and standards to the standard comparison of the color stones repeatedly. Or use the chroma, scan the graded diamond within the visible light range, and then r, and then
In a series of technical analysis and treatment; the clarity of the diamond means its purity, the higher the clarity of the diamond. The less impurities, defects, or defects, otherwise, the opposite is the opposite.
It objectively, the flawless diamonds are rare. N
The inside and surface flaws of the diamonds and surface defects are carefully observed. Under this condition, the clarity of the diamond is divided into 5 large -class: flawless LC,
Flaw level VS, flawed SI and heavy flaws P.
The subdivided into 10 small levels within 5 large -level, namely LC, VVS1, VS1, VS2, SI1, SI2 , P1, P2 and
P3; Diamond cutting refers to the ratio and modification of cutting diamonds. This is the finger of the 4C standard. Label. The brilliant glory of the diamond is due to its unique high refractive index and high -color scattered performance (commonly known as "fire color
wiccan jewelry wholesale I only heard that diamonds are divided into d, e, f, g, h, i, j, k, l, m, n
china jewelry beads wholesale Is there any market price of color L-J. Clear level VS?
tous jewelry wholesale Clearness
fl perfect flawless
if internal flawlessness, slightly defective surface
vvs1. VVS2 contains extremely tiny inner containing substances (fine flaws that cannot be seen by the naked eye)
vs1. Vs2. Small inner content (fine defects that cannot be seen with the naked eye)
SI1. Si2. Small inner content (unable to see the naked eye)
i1. I2. I3. n. Color
The color grading of diamonds from English letters D to Z divided into level 23-
D, E, F within the colorless range;
g, h, i, j It is close to the colorless range;
K, L, M slightly light yellow;
Nn is light yellow
Eximable diamond grade--
diamonds with their highest hardness, crystal clear texture The eye -catching characteristics are called "the king of gems" in the world.
It is a symbol of success, elegance, loyalty, eternity and innocence, so it is loved by people. Diamonds are currently the largest type of gem in the world's jewelry
Since the advent of light detection instruments, the authenticity of diamonds has become
is a very simple matter, but how to evaluate the pros and cons of a diamond has become the main problem in the diamond trade.
The latest national standard GB/T16554-1996 "Diamond Horch" stipulates that there are four factors for evaluating the level of diamond level
Work (CUT) and carat weight. These four
factors are also called "4C" standards. "4C" is the first letter, clarity, cutting and carat weight of color, clarity, cutting, and carat weight. The lack of comprehensive elements are also the measurement target for consumers to judge the value of a diamond
.
The diamonds in the jewelry market, pure natural diamonds, and diamonds that have been treated with radiation, filling, etc. The background is white), yellow diamonds, and color diamonds such as
red, green, blue, orange, etc.; from the shape, there are standard round diamonds, as well as heart -shaped, oval, pear -shaped
diamonds such as. The most common diamonds in the market are white (colorless) standard round diamonds, so in the "4C" standard
, the color, clarity, and carat weight of diamonds only refer to natural white (none of the natural white (none Light) to the light yellow (brown, gray) series,
The polished diamonds with a weight of more than 0.2 for grading, and the cutting grades are only for standard round -type cut diamonds or inlaid with white
(colorless) until Light yellow (brown, gray) series, 1 carat ~ 0.1 carat diamond quality classification. The "4C" standard is not suitable for color
diamonds and radiation and filling diamond grades.
In the "4C" standard, the color of the diamond is divided into 12 levels.分级的方法是：将纯净无色的钻石定为rn最高色极──极白、100色，用D表示，也可写为D(100)， 随着钻石黄色成份的不断增加，
has gradually decreased to E (99), f (9
, g (97), H (96), I (95), f (94), K (93), L (92) ), M (91), n (90)
and less than n (90). In the diamond appraisal certificate, the color level is usually only represented by English letters. When the color level is lower than N, general
It is believed that the diamond is no longer suitable for jewelry.
The color grading of the diamond is in the specified and standardized hierarchical environment. . Or use the chromitors, scan the graded diamonds within the visible light range, and then
In a series of technical analysis and treatment; The higher the clarity, the less the internal impurities, defects or defects of the table
, the opposite is the opposite.
The objective speaking, the flawless diamonds are rare Use 10 times the large mirror to treat the internal and surface flaws of the diamonds and surface flaws of the section of the large mirror. Under this condition, the clarity of the diamond is divided into 5 large -level: flawless LC,
polar micro -flaw -level VVS VVS , Micro -flawed VS, defect SI and heavy flaws P.
The subdivided into 10 small levels within 5 large -level, namely LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1 , P2 and
p3; Diamond cutting refers to the ratio and modification of cutting diamonds. This is a finger
in the 4C standard. High refractive index and high -color scattered performance (commonly known as "Firecai